MySQL to MariaDB Migration

SQLines tools can help you assess and convert database schema (DDL), queries and SQL scripts for MySQL to MariaDB migration.

• SQLines SQL Converter - SQL scripts assessment and conversion tool

Databases:

• MySQL 8.x, 6.x and 5.x
• MariaDB 10.x and 5.x

• SQL Language Elements
• Data Types
• Built-in SQL Functions
• SELECT Statement
• SQL Statements
• System Variables

Operators:

	MySQL		MariaDB
1	col->"$.path"	Extract JSON value	Not supported
2	col->>"$.path"	Extract JSON value and unquote	Not supported

JSON data:

Regular expression functions:

	MySQL		MariaDB
1	REGEXP_LIKE(str, pattern [,mode])	Check for common JSON keys in json1 and json2	Not supported

JSON functions:

	MySQL		MariaDB
1	JSON_OVERLAPS(json1, json2)	Check for common JSON keys in json1 and json2	Not supported
2	JSON_PRETTY(json)	Format JSON value	Not supported
3	JSON_STORAGE_FREE(json)	Get the freed JSON storafe after update	Not supported
4	JSON_STORAGE_SIZE(json)	Get the size of binary representation of JSON	Not supported
5	JSON_TABLE(columns_definition)	Produce tabular data from JSON data	Not supported

JSON expressions:

	MySQL		MariaDB
1	CAST('null' AS JSON)	Null JSON document	Not allowed, requires CAST('null' AS LONGTEXT)

UUID functions:

	MySQL		MariaDB
1	BIN_TO_UUID(uuid_binary)	Convert binary UUID to string	Not supported
2	IS_UUID(uuid_string)	Check for valid string-format UUID	Not supported
3	UUID_TO_BIN(uuid_string)	Convert string UUID to binary	Not supported

Spatial functions:

	MySQL		MariaDB
1	DISTANCE(p1, p2)	Get the distance between p1 and p2	ST_DISTANCE(p1, p2)
2	MBRCOVEREDBY(p1, p2)	Check coverage	Not supported
3	ST_BUFFER_STRATEGY(strategy, points)	Buffer strategy	Not supported
4	ST_DISTANCE_SPHERE(g1, g2 [, radius])	Get the minimum spherical distance	Not supported
5	ST_GEOHASH(long, lat, length)	Returns a geo hash string	Not supported
6	ST_ISVALID(param)	Check if param is geometrically valid	Not supported
7	ST_LATFROMGEOHASH(geohash)	Return the latitude from a geo hash string	Not supported
8	ST_LONGFROMGEOHASH(geohash)	Return the longitude from a geo hash string	Not supported
9	ST_POINTFROMGEOHASH(geohash, id)	Return POINT from a geo hash string	Not supported
10	ST_SIMPLIFY(g, max_distance)	Simplify a geometry	Not supported
11	ST_VALIDATE(g)	Validate a geometry	Not supported

Replication related functions:

	MySQL		MariaDB
1	GTID_SUBSET(set1, set2)	Checks GTIDs in bots sets	Not supported
2	GTID_SUBTRACT(set1, set2)	Get GTIDs from set1 that not exist in set2	Not supported
3	WAIT_FOR_EXECUTED_GTID_SET(set)	Wait until all GTIDs are applied	Not supported
4	WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS(set)		Not supported

Miscellaneous functions:

	MySQL		MariaDB
1	ANY_VALUE(col)	Allow selecting columns that are not in GROUP BY	Not supported
2	GROUPING(col)	Grouping with GROUP BY WITH ROLLUP	Not supported
3	RANDOM_BYTES(length)	Generate random length bytes	Not supported
4	VALIDATE_PASSWORD_STRENGTH(pwd)	Validate plaintext password strength	Not supported

Converting SQL SELECT statement:

	MySQL		MariaDB
1	/*+ MAX_EXECUTION_TIME(n) */	Max execution time in milliseconds, query hint	Not supported

Converting SQL statements:

	MySQL		MariaDB
1	CREATE TABLESPACE name …	Create a tablespace	Not supported
2	CREATE USER name …	Create an user	CREATE USER name … see notes below

CREATE USER statement:

	MySQL		MariaDB
1	IDENTIFIED WITH mysql_native_password	User authentication plugin	Not supported
	IDENTIFIED WITH caching_sha2_password

System variables shown by SHOW GLOBAL VARIABLES statement:

	MySQL		MariaDB
1	max_execution_time	Max execution time for SELECT in milliseconds	max_statement_time	Time in seconds