`information_schema.user_attributes.*`

show items implemented by

any at least two only one database all databases

relation	column	mysql	mariadb	tidb	postgres	cockroachdb	mssql
`user_attributes`
	`attribute`	`LONGTEXT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`host`	`CHAR NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`user`	`CHAR NOT NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported