Help Center> GaussDB> Service Overview> Compatibility with MySQL Databases> Primary/Standby Instances> MySQL Compatibility in M-Compatible Mode> Data Types> Attributes Supported by Data Types

Updated on 2024-05-14 GMT+08:00

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Attributes Supported by Data Types

**Table 1** Attributes supported by data types
No.	MySQL	GaussDB
1	NULL	Supported.
2	NOT NULL	Supported.
3	DEFAULT	Supported.
4	ON UPDATE	Supported.
4	PRIMARY KEY	Supported.
5	AUTO_INCREMENT	Supported.
6	CHARACTER SET name	Supported.
7	COLLATE name	Supported.

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