SQL server management studio
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This document discusses Microsoft SQL Server and data definition language (DDL) statements. It provides examples of using DDL statements to create and alter databases and tables, as well as delete tables. Data manipulation language (DML) statements are also covered, with examples shown for inserting, selecting, updating, and deleting data in tables. The lecture is presented by Ashna Nazm Hamasalh and focuses on introductory SQL topics.
SQL server management studio
- 1. Microsoft SQL server Lecture : four Lecturer :Ashna nazm hamasalh [email protected] Kirkuk institute for computer science 1 lecturer.Miss.Ashna Nazm Hamasalh
- 2. outline Microsoft SQL SERVER SQL Parts DDL STATEMENTS 2 lecturer.Miss.Ashna Nazm Hamasalh
- 3. DDL STATEMENTS • To create a Database – Syntax : CREATE DATABASE dbname; – Example: CREATE DATABASE my_db; • To Use a database – Syntax : Use dbname; – Example: Use my_db; 3 lecturer.Miss.Ashna Nazm Hamasalh
- 4. Creating a table • Syntax CREATE TABLE table_name ( column_name1 data_type(size), column_name2 data_type(size), column_name3 data_type(size), PRIMARY KEY(column_name1)); • Example CREATE TABLE Persons ( PersonID int identity(1,1), FirstName varchar(255), Address varchar(255), City varchar(255), Primary key(PersonalID) ); 4 lecturer.Miss.Ashna Nazm Hamasalh
- 5. DDL - Altering a table • ALTER TABLE Persons ADD email VARCHAR(60); • ALTER TABLE Persons DROP COLUMN city; • exec sp_rename 'Table_1.email','fullname','column'; • DDL - Deleting a Table • DROP TABLE table_name ; 5 lecturer.Miss.Ashna Nazm Hamasalh
- 6. DML STATEMENTS • DML - Insert Data into a table • Syntax : – INSERT INTO table_name VALUES (value1,value2,value3,...); • Example: – INSERT INTO Customers (CustomerName, City, Country) VALUES (baabtra', ‘Calicut', ‘India'); Note : String and date values are specified as quoted string. Also with insert you can insert NULL directly to represent a missing value. 6 lecturer.Miss.Ashna Nazm Hamasalh
- 7. • DML -Retrieving information from a table •The SELECT statement is used to pull data from a table” • Syntax: SELECT what_to_select FROM table_name Whereconditions_to_satisfy ; The Where clause is optional. If it is present, conditions_to_satisfy specifies one or more conditions that rows must satisfy to qualify for retrieval. What_to_select indicates what you want to see. This can be a list of columns or * to indicate “all columns”. 7 lecturer.Miss.Ashna Nazm Hamasalh
- 8. DML - Example • Select * from person; • Select id,firstname from person; • Select * from person where city=‘banglore’ 8 lecturer.Miss.Ashna Nazm Hamasalh
- 9. • DML - Update Query Syntax: • UPDATE table_name SET column1=value1,column2=value2,... WHERE some_column=some_value; Example: • UPDATE Customers SET ContactName=‘Alex', City=‘calicut‘ WHERE CustomerName=‘baabtra'; 9 lecturer.Miss.Ashna Nazm Hamasalh
- 10. • Delete Query Syntax: DELETE FROM table_name WHERE some_column=some_value; Example : DELETE FROM Customers WHERE CustomerName=‘baabtra' AND ContactName='Maria'; 10 lecturer.Miss.Ashna Nazm Hamasalh