`information_schema.innodb_columns.*`

show items implemented by

any at least two only one database all databases

relation	column	mysql	mariadb	tidb	postgres	cockroachdb	mssql
`innodb_columns`
	`default_value`	`TEXT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`has_default`	`INT NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`len`	`INT NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`mtype`	`INT NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`name`	`VARCHAR NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`pos`	`BIGINT NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`prtype`	`INT NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`table_id`	`BIGINT NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported