`information_schema.st_units_of_measure.*`

show items implemented by

any at least two only one database all databases

relation	column	mysql	mariadb	tidb	postgres	cockroachdb	mssql
`st_units_of_measure`
	`conversion_factor`	`DOUBLE NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`description`	`VARCHAR NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`unit_name`	`VARCHAR NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported
	`unit_type`	`VARCHAR NULL`: 8	unsupported	unsupported	unsupported	unsupported	unsupported