information_schema.engines.*| relation | column | mysql | mariadb | tidb | postgres | cockroachdb | mssql | |
|---|---|---|---|---|---|---|---|---|
engines |
||||||||
comment |
VARCHAR NOT NULL:
5.7-8
| VARCHAR NOT NULL:
NULL:
| VARCHAR(80) NULL:
| unsupported | unsupported | unsupported | ||
engine |
VARCHAR NOT NULL:
5.7-8
| VARCHAR NOT NULL:
NULL:
| VARCHAR(64) NULL:
| unsupported | unsupported | unsupported | ||
savepoints |
VARCHAR NULL:
5.7-8
| NULL:
| VARCHAR(3) NULL:
| unsupported | unsupported | unsupported | ||
support |
VARCHAR NOT NULL:
5.7-8
| VARCHAR NOT NULL:
NULL:
| VARCHAR(8) NULL:
| unsupported | unsupported | unsupported | ||
transactions |
VARCHAR NULL:
5.7-8
| NULL:
| VARCHAR(3) NULL:
| unsupported | unsupported | unsupported | ||
xa |
VARCHAR NULL:
5.7-8
| NULL:
| VARCHAR(3) NULL:
| unsupported | unsupported | unsupported | ||