MySQL Without the SQL - Oh My! August 2nd presentation at Mid Atlantic Developers Conference

MySQL
Without the SQL
Oh My!
Dave Stokes
@stoker
david.stokes@oracle.com
Elephantdolphin.blogger.com
OpensourceDBA.wordpress.com

Safe Harbor Agreement
THE FOLLOWING IS INTENDED TO OUTLINE OUR GENERAL PRODUCT
DIRECTION. IT IS INTENDED FOR INFORMATION PURPOSES ONLY, AND MAY
NOT BE INCORPORATED INTO ANY CONTRACT. IT IS NOT A COMMITMENT TO
DELIVER ANY MATERIAL, CODE, OR FUNCTIONALITY, AND SHOULD NOT BE
RELIED UPON IN MAKING PURCHASING DECISIONS. THE DEVELOPMENT,
RELEASE, AND TIMING OF ANY FEATURES OR FUNCTIONALITY DESCRIBED
FOR ORACLE'S PRODUCTS REMAINS AT THE SOLE DISCRETION OF ORACLE.
3

NoSQL & SQL
5
Together!
MySQL
Document
Store

Relational Databases
● Original Goal was to save data with minimal duplication
● Disks were expensive
● … and slow
● 45 years old
● Introduced the concept of accessing many records with a single command
7

● Data Integrity
○ Normalization
○ constraints (foreign keys, ...)
● Atomicity, Consistency, Isolation, Durability
○ ACID compliant
○ transactions
● SQL
○ powerful query language 8

● Need to set up tables BEFORE use
● Relations, indexes, data normalization, query optimizations
● Hard to change on the fly
● Need a DBA or someone who has DBA skills
● This can be a chokepoint
9

NoSQL or Document Store
● Schemaless
○ No schema design, no normalization, no foreign keys, no data types, …
○ Very quick initial development
● Flexible data structure
○ Embedded arrays or objects
○ Valid solution when natural data can not be modeled optimally into a
relational model
○ Objects persistence without the use of any ORM - *mapping object-
oriented*
11

NoSQL or JSON Document Store
● JSON
● close to frontend
● native in JS
● easy to learn
12

How DBAs see data as opposed to how Developers see data
{
"GNP" : 249704,
"Name" : "Belgium",
"government" : {
"GovernmentForm" :
"Constitutional Monarchy, Federation",
"HeadOfState" : "Philippe I"
},
"_id" : "BEL",
"IndepYear" : 1830,
"demographics" : {
"Population" : 10239000,
"LifeExpectancy" : 77.8000030517578
},
"geography" : {
"Region" : "Western Europe",
"SurfaceArea" : 30518,
"Continent" : "Europe"
}
}
13

What if there was a way to provide both
SQL and NoSQL on one stable platform that
has proven stability on well know
technology with a large Community and a
diverse ecosystem ?
With the MySQL Document
Store it is now an option!
14

A Solution for all
Developers:
schemaless
★ rapid prototyping
& simpler APIs
★ document model
★ transactions
Operations:
★ performance
management/visibility
★ robust replication,
backup, restore
★ comprehensive tooling
ecosystem
★ simpler application
schema upgrades 15
Business Owner:
★ don't lose my data ==
ACID trx
★ capture all my data =
extensible/schemaless
★ product on
schedule/time to
market = rapid
development

Built on the MySQL JSON Data type and Proven MySQL Server Technology 16
★ Provides a schema flexible JSON Document Store
★ No SQL required
★ No need to define all possible attributes, tables,
etc.
★ Uses new MySQL X DevAPI
★ Can leverage generated column to extract JSON
values into materialized columns that can be
indexed for fast SQL searches.

Built on the MySQL JSON Data type and Proven MySQL Server Technology 17
★ Document can be ~1GB
○ It's a column in a row of a table
★ Allows use of modern programming styles
○ No more embedded strings of SQL in your code
○ Easy to read
★ Also works with relational Tables
★ Proven MySQL Technology

★ C++
★ Java
★ .Net
★ Node.js
★ JavaScript
★ Python
★ PHP
○ Working with other Communities to help them support it too 18
Connectors for

★ Command Completion
★ Python, JavaScripts & SQL modes
★ Admin functions
★ New Util object
★ A new high-level session concept that can scale from single MySQL
Server to a multiple server environment
19
New MySQL Shell

★ Non-blocking, asynchronous calls follow common language patterns
★ Send out many queries and proicess other things until they return
★ Supports CRUD operations
★ Concentreate on basic funmctions
★ Easily scale from one server to InnoDB cluster w/o changing application!
20
New Model

21
X Protocol built on Google Protobufs

22
Architecture of both Old and New Protocols

23
How Your Application will work with InnoDB Cluster

But what does this look like in PHP?? 24

JavaScript 25
// Connecting to MySQL Server and working with a Collection
var mysqlx = require('mysqlx');
// Connect to server
var mySession = mysqlx.getSession( {
host: 'localhost', port: 33060,
user: 'user', password: 'password'} );
var myDb = mySession.getSchema('test');
// Create a new collection 'my_collection'
var myColl = myDb.createCollection('my_collection');
// Insert documents
myColl.add({_id: '1', name: 'Sakila', age: 15}).execute();
myColl.add({_id: '2', name: 'Susanne', age: 24}).execute();
myColl.add({_id: '3', name: 'User', age: 39}).execute();
// Find a document
var docs = myColl.find('name like :param1 AND age < :param2').limit(1).
bind('param1','S%').bind('param2',20).execute();
// Print document
print(docs.fetchOne());
// Drop the collection
myDb.dropCollection('my_collection');
No SQL!!

Python 26
# Connecting to MySQL Server and working with a Collection
from mysqlsh import mysqlx
# Connect to server
mySession = mysqlx.get_session( {
'host': 'localhost', 'port': 33060,
'user': 'user', 'password': 'password'} )
myDb = mySession.get_schema('test')
# Create a new collection 'my_collection'
myColl = myDb.create_collection('my_collection')
# Insert documents
myColl.add({'_id': '1', 'name': 'Sakila', 'age': 15}).execute()
myColl.add({'_id': '2', 'name': 'Susanne', 'age': 24}).execute()
myColl.add({'_id': '3', 'name': 'User', 'age': 39}).execute()
# Find a document
docs = myColl.find('name like :param1 AND age < :param2')
.limit(1)
.bind('param1','S%')
.bind('param2',20)
.execute()
# Print document
doc = docs.fetch_one()
print doc

Node.JS 27
// Connecting to MySQL Server and working with a Collection
var mysqlx = require('@mysql/xdevapi');
var db;
mysqlx
.getSession({
user: 'user',
password: 'password',
host: 'localhost',
port: '33060',
})
.then(function (session) {
db = session.getSchema('test');
return db.createCollection('my_collection');
})
.then(function (myColl) {
// Insert documents
return Promise
.all([
myColl.add({ name: 'Sakila', age: 15 }).execute(),
myColl.add({ name: 'Susanne', age: 24 }).execute(),
myColl.add({ name: 'User', age: 39 }).execute()
])
.then(function () {
// Find a document
return myColl
.find('name like :name && age < :age')
.bind({ name: 'S%', age: 20 })
.limit(1)
.execute(function (doc) {
// Print document
console.log(doc);
});
});
})
.then(function(docs) {
return db.dropCollection('my_collection');
})
.catch(function(err) {
// Handle error
});

C++ 28
var mySession = MySQLX.GetSession("server=localhost;port=33060;user=user;password=password;");
var myDb = mySession.GetSchema("test");
// Create a new collection "my_collection"
var myColl = myDb.CreateCollection("my_collection");
// Insert documents
myColl.Add(new { name = "Sakila", age = 15}).Execute();
myColl.Add(new { name = "Susanne", age = 24}).Execute();
myColl.Add(new { name = "User", age = 39}).Execute();
// Find a document
var docs = myColl.Find("name like :param1 AND age < :param2").Limit(1)
.Bind("param1", "S%").Bind("param2", 20).Execute();
// Print document
Console.WriteLine(docs.FetchOne());
myDb.DropCollection("my_collection");

Java 29
Session mySession = new
SessionFactory().getSession("mysqlx://localhost:33060/test?user=user&password=password");
Schema myDb = mySession.getSchema("test");
Collection myColl = myDb.createCollection("my_collection");
// Insert documents
myColl.add("{"name":"Sakila", "age":15}").execute();
myColl.add("{"name":"Susanne", "age":24}").execute();
myColl.add("{"name":"User", "age":39}").execute();
// Find a document
DocResult docs = myColl.find("name like :name AND age < :age")
.bind("name", "S%").bind("age", 20).execute();
// Print document
DbDoc doc = docs.fetchOne();
System.out.println(doc);
myDB.dropCollection("test", "my_collection");

Starting using MySQL in few minutes 31

For this example, I will use the well known restaurants collection:
We need to dump the data to a file and
we will use the MySQL Shell
with the Python interpreter to load the data.
Migration from MongoDB to MySQL Document Store
36

Dump and load using MySQL Shell & Python
This example is inspired by @datacharmer's work: https://www.slideshare.net/datacharmer/mysql-documentstore
$ mongo quiet eval 'DBQuery.shellBatchSize=30000;
db.restaurants.find().shellPrint()'
| perl -pe 's/(?:ObjectId|ISODate)(("[^"]+"))/ $1/g' > all_recs.json
37

Or use new bulk loader in 8.0.13
38

BSON Support
Now, it supports the conversion of the following additional BSON types:
■ Date
■ Timestamp
■ NumberDecimal
■ NumberLong
■ NumberInt
■ Regular Expression
■ Binary
39
> util.importJson("/path_to_file/neighborhoods_mongo.json",
{schema: "test", collection: "neighborhoods",
convertBsonTypes: true});

41
Let’s query
Too many records to show here … let’s limit it!
restaurants.find().limit(1)

42
More Examples!
restaurants.find().fields([“name”,”cuisine”]).limit(2
)

43
Comparing Syntax: MongoDB vs MYSQL
MongoDB:
> db.restaurants.find({"cuisine": "French",
"borough": { $not: /^Manhattan/} },
{"_id":0, "name": 1,"cuisine": 1, "borough": 1}).limit(2)
MySQL:
>restaurants.find(“cuisine=’French’ AND
borough!=’Manhattan’”).fields([“name”,”cuisine”,”borough”
]).limit(2)

49
MySQL Document Store Objects Summary

MySQL Document Store is Fully ACID Compliant 50

MySQL Document Store is Fully ACID Compliant 51

What does a collection look like on the server ? 53

Every document has a unique identifier called the document ID, which can be
thought of as the equivalent of a table's primary key. The document ID value can
be manually assigned when adding a document.
If no value is assigned, a document ID is generated and assigned to the
document automatically !
Use getDocumentId() or getDocumentIds() to get _ids(s)
_id
54

Mapping to SQL Examples
createCollection('mycollection')
versus
CREATE TABLE `test`.`mycoll` (
doc JSON,
_id VARCHAR(32)
GENERATED ALWAYS AS (doc->>'$._id') STORED
PRIMARY KEY
) CHARSET utf8mb4;
55

Mapping to SQL Examples
mycollection.add({‘test’: 1234})
versus
INSERT INTO `test`.`mycoll` (doc)
VALUES ( JSON_OBJECT( 'test',1234));
56

More Mapping to SQL Examples
mycollection.find("test > 100")
Versus
SELECT doc
FROM `test`.`mycoll`
WHERE (JSON_EXTRACT(doc,'$.test') >100);
57

It's also possible to create indexes without using SQL syntax 59

SQL and JSON Example (3): explain 60

SQL and JSON Example (3): explain 61

SQL and JSON Example (4): add index 62

SQL and JSON Example (4): add index 63

[
{
"date": {
"$date": 1416009600000
},
"grade": "Z",
"score": 38
},
{
"date": {
"$date": 1398988800000
},
"grade": "A",
"score": 10
},
{
"date": {
"$date": 1362182400000
},
"grade": "A",
"score": 7
},
{
"date": {
"$date": 1328832000000
},
"grade": "A",
"score": 13
}
] 64
Embedded
Arrays of
values can be
messy to
traverse.

SQL and JSON Example (5): arrays 65

$.grades[0]
$.grades[1 to 2]
$.grades[first]
$.grades[last]
$.grades[first to last - 1]
66
Arrays are now simple

NoSQL as SQL 67
JSON_TABLE turns your un-
structured JSON data into a
temporary structured table!

NoSQL as SQL 68
This temporary structured table can
be treated like any other table --
LIMIT, WHERE, GROUP BY ...

69
More Sophisticated Analysis

Find the top 10 restaurants by grade for each cuisine 70
WITH cte1 AS
(SELECT doc->>"$.name" AS name,
doc->>"$.cuisine" AS cuisine,
(SELECT AVG(score) FROM
JSON_TABLE(doc, "$.grades[*]" COLUMNS
(score INT PATH "$.score")) AS r) AS avg_score
FROM restaurants)
SELECT *, RANK() OVER
(PARTITION BY cuisine ORDER BY avg_score DESC) AS `rank`
FROM cte1
ORDER BY `rank`, avg_score DESC LIMIT 10;
This query uses a Common Table Expression (CTE) and a Windowing Function to rank the
average scores of each restaurant, by each cuisine assembled in a JSON_TABLE

No SQL Consumed In This Query!! 71
$schema = $session->getSchema("world");
$table = $schema->getTable("city");
$row = $table->select('Name','District')
->where('District like :district')
->bind(['district' => 'Texas'])
->limit(25)
->execute()->fetchAll();

JSON Validation
The Problem
Unlike strictly types relational databases there is no data normalization or ‘rigor’
applied to that data.
There is also no native way to do range checks
And there is no way have required fields
73

JSON-Schema.org
The Problem
Unlike strictly types relational databases there is no data normalization or ‘rigor’
applied to that data.
There is also no native way to do range checks
And there is no way have required fields
JSON-Shema.org is work to fix that
74

JSON Validation
set @s='{"type": "object",
"properties": {
"myage": {
"type" : "number",
"minimum": 28,
"maximum": 99
}
}
}';
set @d='{ "myage": 33}';
select
JSON_SCHEMA_VALID(@s,@d);
+--------------------------+
| JSON_SCHEMA_VALID(@s,@d) |
+--------------------------+
| 1 |
+--------------------------+
1 row in set (0.00 sec)
75

JSON Validation Report
select JSON_PRETTY(JSON_SCHEMA_VALIDATION_REPORT(@s,@d))G
*************************** 1. row ***************************
JSON_PRETTY(JSON_SCHEMA_VALIDATION_REPORT(@s,@d)): {
"valid": false,
"reason": "The JSON document location '#/myage' failed requirement 'minimum' at
JSON Schema location '#/properties/myage'",
"schema-location": "#/properties/myage",
"document-location": "#/myage",
"schema-failed-keyword": "minimum"
}
76

JSON Check Constraint
CREATE TABLE `testx` (
`col` JSON,
CONSTRAINT `myage_inRange`
CHECK (JSON_SCHEMA_VALID('{"type": "object",
"properties": {
"myage": {
"type" : "number",
"minimum": 28,
"maximum": 99
}
},"required": ["myage"]
}',
`col`) = 1)
);
77

JSON Check Constraint
mysql> insert into testx values('{"myage":27}');
ERROR 3819 (HY000): Check constraint 'myage_inRange' is violated.
mysql> insert into testx values('{"myage":97}');
Query OK, 1 row affected (0.02 sec)
78

Index JSON Arrays
{ "user":"Bob", "user_id":31, "zipcode":[94477,94536] }
CREATE TABLE customers
( id BIGINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
modified DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
custinfo JSON,
INDEX zips( (CAST(custinfo->'$.zip' AS UNSIGNED ARRAY)) )
);
Mutli Value Indexes allow you to go past the 1:1 relation to index the data in JSON
arrays. And there are three special functions what can make use of MVIs when
used on the right side of a WHERE clause -- MEMBER OF(), JSON_CONTAINS(),
and JSON_OVERLAPS()
80

Conclusion: What Do I Gain?
81

This is the best of the two worlds in one product !
● Data integrity
● ACID Compliant
● Transactions
● SQL
● Schemaless
● flexible data structure
● easy to start (CRUD)
82

Mutable Data!!
Reduce Many to many joins
Replace ‘stub’ tables
Change on the fly, aggregate new data
83

Non JSON Data Transforms to JSON
84

GeoJSON support too!
mysql> SELECT ST_AsGeoJSON(ST_GeomFromText('POINT(11.11111
12.22222)'),2);
+-------------------------------------------------------------+
| ST_AsGeoJSON(ST_GeomFromText('POINT(11.11111 12.22222)'),2) |
+-------------------------------------------------------------+
| {"type": "Point", "coordinates": [11.11, 12.22]} |
+-------------------------------------------------------------+
85

New in MySQL 8.0
1. True Data Dictionary
2. Default UTF8MB4
3. Windowing Functions, CTEs, Lateral Derived Joins
4. InnoDB SKIPPED LOCK and NOWAIT
5. Instant Add Column
6. Histograms
7. Resource Groups
8. Better optimizer with new temporary table engine
9. True Descending Indexes
10.3D GIS
11.JSON Enhancements
86

Please buy my book!
If you deal with the JSON
Data Type or have an
interest in the MySQL
Document Store, this text is a
great guide with many
examples to help you
understand the complexities
and opportunities with a
native JSON Data Type –
Avalable on Amazon 87

Thanks!
Contact info:
Dave Stokes
David.Stokes@Oracle.com
@Stoker
slideshare.net/davidmstokes
Elepantdolphin.blogger.com
opensourcedba.Wordpress.com
88

MySQL Without the SQL - Oh My! August 2nd presentation at Mid Atlantic Developers Conference

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MySQL Without the SQL - Oh My! August 2nd presentation at Mid Atlantic Developers Conference