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Oren Nakdimon - Oracle SQL Pattern Matching Made Easy

Oren Nakdimon
Oren Nakdimon

This document provides an overview of SQL pattern matching using MATCH_RECOGNIZE in Oracle 12c. It discusses how MATCH_RECOGNIZE allows for enhanced analysis of row sequences to detect matches to complex patterns. The presentation walks through several examples of using MATCH_RECOGNIZE to find patterns in Eurovision song contest data, demonstrating pattern definitions, variables, quantifiers and other features of the syntax. Measures are also introduced to number matched rows.

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Oracle SQL Pattern Matching Made Easy Oren Nakdimon www.db-oriented.com  oren@db-oriented.com  +972-54-4393763 @DBoriented
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon MATCH_RECOGNIZE  Added in Oracle 12cR1  Enhanced analysis of row sequences  For detecting matches to complex patterns  A significant boost to the analytical capabilities of SQL  Very powerful With Great Power Comes Complex Syntax
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Agenda  Start using Pattern Matching  Step by step  Not all the capabilities…  But all the essentials (and more)  Simple examples  Recommended resources
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon http://db-oriented.com Who Am I?
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon 1956 Switzerland Refrain Lys Assia French Switzerland 1957 Netherlands Net als toen Corry Brokken 31 Dutch Germany 1958 France Dors, mon amour André Claveau 27 French Netherlands 1959 Netherlands Een beetje Teddy Scholten 21 Dutch France 1960 France Tom Pillibi Jacqueline Boyer 32 French United Kingdom 1961 Luxembourg Nous les amoureux Jean-Claude Pascal 31 French France 1962 France Un premier amour Isabelle Aubret 26 French Luxembourg 1963 Denmark Dansevise Grethe and Jørgen Ingmann 42 Danish United Kingdom 1964 Italy Non ho l'età Gigliola Cinquetti 49 Italian Denmark 1965 Luxembourg Poupée de cire, poupée de son France Gall 32 French Italy 1966 Austria Merci, Chérie Udo Jürgens 31 German Luxembourg 1967 United Kingdom Puppet on a String Sandie Shaw 47 English Austria 1968 Spain La, la, la Massiel 29 Spanish United Kingdom 1969 Netherlands De troubadour Lenny Kuhr 18 Dutch Spain 1970 Ireland All Kinds of Everything Dana 32 English Netherlands 1971 Monaco Un banc, un arbre, une rue Séverine 128 French Ireland 1972 Luxembourg Après toi Vicky Leandros 128 French United Kingdom 1973 Luxembourg Tu te reconnaîtras Anne-Marie David 129 French Luxembourg YEAR WINNER SONG PERFORMER POINTS LANGUAGE HOST
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find all the wins of Luxembourg SELECT * FROM EUROVISION_WINNERS WHERE WINNER = 'Luxembourg';
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find all the wins of Luxembourg     Pattern Variable 1 2 3 4 LUX SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' )
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find 2 successive wins of Luxembourg SELECT * FROM EUROVISION_WINNERS WHERE WINNER = 'Luxembourg';
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find 2 successive wins of Luxembourg     Pattern Variable SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) 1 LUX order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Variables Pattern
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find 2 successive wins of Luxembourg   Pattern Variable SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) 1 LUX order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find 2 successive wins of Luxembourg SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX LUX) DEFINE LUX AS WINNER = 'Luxembourg' )
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find 2 successive wins of Luxembourg SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX{2}) DEFINE LUX AS WINNER = 'Luxembourg' )
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon PATTERN Quantifiers Pattern Number of consecutive occurrences X 1 X{n} n X{n,} n or more X* 0 or more X{n,m} between n and m X{,m} between 0 and m X? 0 or 1 X+ 1 or more
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find one or more successive wins of Luxembourg     Pattern Variable SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' ) 1 2 3 LUX order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' )
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon A match is a consecutive sequence of (zero, one, or more) records, that matches a specific pattern
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' )
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) SELECT MATCH#, YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' )
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon MATCH_RECOGNIZE
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Input and Output SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Input and Output SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Input and Output
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Input and Output YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden I ? ? ? ? ? ? Pattern Variables order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden I ? ? ? ? ? ? LN ? ? ? ? ? Pattern Variables order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden I ? ? ? ? ? ? LN ? ? ? ? ? UK ? Pattern Variables order by
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon UK LN I SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );     Multiple Pattern Variables 1 2 3 YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden Pattern Variables order by    
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon UK LN I     Multiple Pattern Variables 1 2 3 YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden Pattern Variables order by     SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find two or more successive wins of the same country   YEAR WINNER SONG HOST 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France 1979 Israel Hallelujah Israel 1980 Ireland What's Another Year Netherlands 1981 United Kingdom Making Your Mind Up Ireland 1982 Germany Ein bißchen Frieden United Kingdom 1983 Luxembourg Si la vie est cadeau Germany 1984 Sweden Diggi-Loo Diggi-Ley Luxembourg 1985 Norway La det swinge Sweden 1986 Belgium J'aime la vie Norway 1987 Ireland Hold Me Now Belgium 1988 Switzerland Ne partez pas sans moi Ireland 1989 Yugoslavia Rock Me Switzerland 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland X SAME SELECT MATCH#, YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (X SAME+) DEFINE SAME AS WINNER = PREV(WINNER) );                Implicit Pattern Variable PREV NEXT
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR; PAST LAST ROW (the default) TO NEXT ROW TO FIRST var TO [LAST] var
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#, YEAR;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#, YEAR; FROM_YEAR TO_YEAR 9 NON_WINNING_YEARS WINNER
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST(YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST(YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST(YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS COUNT MAX MIN SUM AVG
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER NON_WINNING_YEARS SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#;
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F  SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F   SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); NF                Implicit Pattern Variable
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); Pattern Alternation NF                Implicit Pattern Variable
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); Pattern Grouping NF                Implicit Pattern Variable
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); NF                Implicit Pattern Variable
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|{-NF-})+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); Pattern Exclusion
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|{-NF-})+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Additional Resources  The Documentation: https://docs.oracle.com/en/database/oracle/oracle- database/18/dwhsg/sql-pattern-matching-data-warehouses.html  Keith Laker’s blog: https://oracle-big-data.blogspot.com/  Stew Ashton’s blog: https://stewashton.wordpress.com/category/match_recognize/
THANK YOU Oren Nakdimon www.db-oriented.com  oren@db-oriented.com  +972-54-4393763 @DBoriented

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Ad

Oren Nakdimon - Oracle SQL Pattern Matching Made Easy

  • 1. Oracle SQL Pattern Matching Made Easy Oren Nakdimon www.db-oriented.com  [email protected]  +972-54-4393763 @DBoriented
  • 2. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon MATCH_RECOGNIZE  Added in Oracle 12cR1  Enhanced analysis of row sequences  For detecting matches to complex patterns  A significant boost to the analytical capabilities of SQL  Very powerful With Great Power Comes Complex Syntax
  • 3. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Agenda  Start using Pattern Matching  Step by step  Not all the capabilities…  But all the essentials (and more)  Simple examples  Recommended resources
  • 4. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon http://db-oriented.com Who Am I?
  • 5. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon 1956 Switzerland Refrain Lys Assia French Switzerland 1957 Netherlands Net als toen Corry Brokken 31 Dutch Germany 1958 France Dors, mon amour André Claveau 27 French Netherlands 1959 Netherlands Een beetje Teddy Scholten 21 Dutch France 1960 France Tom Pillibi Jacqueline Boyer 32 French United Kingdom 1961 Luxembourg Nous les amoureux Jean-Claude Pascal 31 French France 1962 France Un premier amour Isabelle Aubret 26 French Luxembourg 1963 Denmark Dansevise Grethe and Jørgen Ingmann 42 Danish United Kingdom 1964 Italy Non ho l'età Gigliola Cinquetti 49 Italian Denmark 1965 Luxembourg Poupée de cire, poupée de son France Gall 32 French Italy 1966 Austria Merci, Chérie Udo Jürgens 31 German Luxembourg 1967 United Kingdom Puppet on a String Sandie Shaw 47 English Austria 1968 Spain La, la, la Massiel 29 Spanish United Kingdom 1969 Netherlands De troubadour Lenny Kuhr 18 Dutch Spain 1970 Ireland All Kinds of Everything Dana 32 English Netherlands 1971 Monaco Un banc, un arbre, une rue Séverine 128 French Ireland 1972 Luxembourg Après toi Vicky Leandros 128 French United Kingdom 1973 Luxembourg Tu te reconnaîtras Anne-Marie David 129 French Luxembourg YEAR WINNER SONG PERFORMER POINTS LANGUAGE HOST
  • 6. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find all the wins of Luxembourg SELECT * FROM EUROVISION_WINNERS WHERE WINNER = 'Luxembourg';
  • 7. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find all the wins of Luxembourg     Pattern Variable 1 2 3 4 LUX SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' )
  • 8. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find 2 successive wins of Luxembourg SELECT * FROM EUROVISION_WINNERS WHERE WINNER = 'Luxembourg';
  • 9. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find 2 successive wins of Luxembourg     Pattern Variable SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) 1 LUX order by
  • 10. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Variables Pattern
  • 11. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find 2 successive wins of Luxembourg   Pattern Variable SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) 1 LUX order by
  • 12. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find 2 successive wins of Luxembourg SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX LUX) DEFINE LUX AS WINNER = 'Luxembourg' )
  • 13. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find 2 successive wins of Luxembourg SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX{2}) DEFINE LUX AS WINNER = 'Luxembourg' )
  • 14. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon PATTERN Quantifiers Pattern Number of consecutive occurrences X 1 X{n} n X{n,} n or more X* 0 or more X{n,m} between n and m X{,m} between 0 and m X? 0 or 1 X+ 1 or more
  • 15. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon YEAR WINNER SONG HOST 1960 France Tom Pillibi United Kingdom 1961 Luxembourg Nous les amoureux France 1962 France Un premier amour Luxembourg 1963 Denmark Dansevise United Kingdom 1964 Italy Non ho l'età Denmark 1965 Luxembourg Poupée de cire, poupée de son Italy 1966 Austria Merci, Chérie Luxembourg 1967 United Kingdom Puppet on a String Austria 1968 Spain La, la, la United Kingdom 1969 Netherlands De troubadour Spain 1970 Ireland All Kinds of Everything Netherlands 1971 Monaco Un banc, un arbre, une rue Ireland 1972 Luxembourg Après toi United Kingdom 1973 Luxembourg Tu te reconnaîtras Luxembourg 1974 Sweden Waterloo United Kingdom 1975 Netherlands Ding-a-dong Sweden 1976 United Kingdom Save Your Kisses for Me Netherlands 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France Find one or more successive wins of Luxembourg     Pattern Variable SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' ) 1 2 3 LUX order by
  • 16. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' )
  • 17. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon A match is a consecutive sequence of (zero, one, or more) records, that matches a specific pattern
  • 18. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' )
  • 19. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX) DEFINE LUX AS WINNER = 'Luxembourg' ) SELECT MATCH#, YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (LUX+) DEFINE LUX AS WINNER = 'Luxembourg' )
  • 20. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon MATCH_RECOGNIZE
  • 21. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Input and Output SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );
  • 22. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Input and Output SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );
  • 23. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Input and Output
  • 24. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I L UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Input and Output YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden
  • 25. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); order by
  • 26. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden order by
  • 27. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden I ? ? ? ? ? ? Pattern Variables order by
  • 28. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden I ? ? ? ? ? ? LN ? ? ? ? ? Pattern Variables order by
  • 29. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' ); Multiple Pattern Variables YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden I ? ? ? ? ? ? LN ? ? ? ? ? UK ? Pattern Variables order by
  • 30. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon UK LN I SELECT * FROM (SELECT YEAR, WINNER, SONG, PERFORMER, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );     Multiple Pattern Variables 1 2 3 YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden Pattern Variables order by    
  • 31. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon UK LN I     Multiple Pattern Variables 1 2 3 YEAR WINNER SONG HOST 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland 1996 Ireland The Voice Norway 1997 United Kingdom Love Shine a Light Ireland 1998 Israel Diva United Kingdom 1999 Sweden Take Me to Your Heaven Israel 2000 Denmark Fly on the Wings of Love Sweden Pattern Variables order by     SELECT * FROM (SELECT YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1990 AND 2000) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (I LN UK?) DEFINE I AS WINNER LIKE 'I%', LN AS LENGTH(SONG)>=18, UK AS HOST='United Kingdom' );
  • 32. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find two or more successive wins of the same country   YEAR WINNER SONG HOST 1977 France L'oiseau et l'enfant United Kingdom 1978 Israel A-Ba-Ni-Bi France 1979 Israel Hallelujah Israel 1980 Ireland What's Another Year Netherlands 1981 United Kingdom Making Your Mind Up Ireland 1982 Germany Ein bißchen Frieden United Kingdom 1983 Luxembourg Si la vie est cadeau Germany 1984 Sweden Diggi-Loo Diggi-Ley Luxembourg 1985 Norway La det swinge Sweden 1986 Belgium J'aime la vie Norway 1987 Ireland Hold Me Now Belgium 1988 Switzerland Ne partez pas sans moi Ireland 1989 Yugoslavia Rock Me Switzerland 1990 Italy Insieme: 1992 Yugoslavia 1991 Sweden Fångad av en stormvind Italy 1992 Ireland Why Me? Sweden 1993 Ireland In Your Eyes Ireland 1994 Ireland Rock 'n' Roll Kids Ireland 1995 Norway Nocturne Ireland X SAME SELECT MATCH#, YEAR, WINNER, SONG, HOST FROM EUROVISION_WINNERS MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() AS MATCH# ALL ROWS PER MATCH PATTERN (X SAME+) DEFINE SAME AS WINNER = PREV(WINNER) );                Implicit Pattern Variable PREV NEXT
  • 33. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146
  • 34. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 35. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 36. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 37. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 38. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 39. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 40. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break YEAR WINNER SONG POINTS 1971 Monaco Un banc, un arbre, une rue 128 1972 Luxembourg Après toi 128 1973 Luxembourg Tu te reconnaîtras 129 1974 Sweden Waterloo 24 1975 Netherlands Ding-a-dong 152 1976 United Kingdom Save Your Kisses for Me 164 1977 France L'oiseau et l'enfant 136 1978 Israel A-Ba-Ni-Bi 157 1979 Israel Hallelujah 125 1980 Ireland What's Another Year 143 1981 United Kingdom Making Your Mind Up 136 1982 Germany Ein bißchen Frieden 161 1983 Luxembourg Si la vie est cadeau 142 1984 Sweden Diggi-Loo Diggi-Ley 145 1985 Norway La det swinge 123 1986 Belgium J'aime la vie 176 1987 Ireland Hold Me Now 172 1988 Switzerland Ne partez pas sans moi 137 1989 Yugoslavia Rock Me 137 1990 Italy Insieme: 1992 149 1991 Sweden Fångad av en stormvind 146 SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 41. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Find returning winners after a break SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 42. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, CLS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() CLS ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 43. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 44. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR;
  • 45. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP PAST LAST ROW PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY YEAR; PAST LAST ROW (the default) TO NEXT ROW TO FIRST var TO [LAST] var
  • 46. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#, YEAR;
  • 47. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon SELECT MATCH#, YEAR, WINNER, SONG, POINTS, VAR FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, CLASSIFIER() VAR ALL ROWS PER MATCH WITH UNMATCHED ROWS AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#, YEAR; FROM_YEAR TO_YEAR 9 NON_WINNING_YEARS WINNER
  • 48. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST(YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
  • 49. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST(YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
  • 50. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST(YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
  • 51. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
  • 52. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS COUNT MAX MIN SUM AVG
  • 53. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#; NON_WINNING_YEARS
  • 54. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon FROM_YEAR TO_YEAR 9 WINNER NON_WINNING_YEARS SELECT MATCH#, WINNER, FROM_YEAR, TO_YEAR, NON_WINNER_YEARS FROM (SELECT * FROM EUROVISION_WINNERS WHERE YEAR BETWEEN 1971 AND 1991) MATCH_RECOGNIZE ( ORDER BY YEAR MEASURES MATCH_NUMBER() MATCH#, A.WINNER WINNER, FIRST(YEAR) FROM_YEAR, LAST (YEAR) TO_YEAR, COUNT(DIFF.*) NON_WINNER_YEARS ONE ROW PER MATCH AFTER MATCH SKIP TO FIRST DIFF PATTERN (A SAME* DIFF+ LIKE_FIRST+) DEFINE SAME AS WINNER = PREV(WINNER), DIFF AS WINNER != A.WINNER, LIKE_FIRST AS WINNER = A.WINNER ) ORDER BY MATCH#;
  • 55. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
  • 56. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F  SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
  • 57. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F   SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
  • 58. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
  • 59. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); NF                Implicit Pattern Variable
  • 60. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); Pattern Alternation NF                Implicit Pattern Variable
  • 61. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); Pattern Grouping NF                Implicit Pattern Variable
  • 62. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 F        SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); NF                Implicit Pattern Variable
  • 63. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|NF)+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
  • 64. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|{-NF-})+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) ); Pattern Exclusion
  • 65. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Fibonacci Numbers SELECT * FROM (select rownum X from dual connect by level<=100) MATCH_RECOGNIZE ( ORDER BY X MEASURES CLASSIFIER() AS F_OR_NOT ALL ROWS PER MATCH PATTERN ( (F|{-NF-})+ ) DEFINE F AS (X = 1 OR X = 2 OR X = LAST(F.X,1) + LAST(F.X,2)) );
  • 66. This presentation is available in http://db-oriented.com/presentations © Oren Nakdimon © Oren Nakdimon Additional Resources  The Documentation: https://docs.oracle.com/en/database/oracle/oracle- database/18/dwhsg/sql-pattern-matching-data-warehouses.html  Keith Laker’s blog: https://oracle-big-data.blogspot.com/  Stew Ashton’s blog: https://stewashton.wordpress.com/category/match_recognize/