`information_schema.information_schema_catalog_name.*`

show items implemented by

any at least two only one database all databases

relation	column	mysql	mariadb	tidb	postgres	cockroachdb	mssql
`information_schema_catalog_name`
`information_schema_catalog_name`	`catalog_name`	unsupported	unsupported	unsupported	`SQL_IDENTIFIER`: 7.4-9.6 `SQL_IDENTIFIER NULL`: 10-15	unsupported	unsupported