information_schema.constraint_column_usage.*

show items implemented by
relation column mysqlmariadbtidbpostgrescockroachdbmssql
constraint_column_usage  
column_name unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
constraint_catalog unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
constraint_name unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
constraint_schema unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
table_catalog unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
table_name unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
table_schema unsupported unsupported unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL: