information_schema.referential_constraints.*

show items implemented by
relation column mysqlmariadbtidbpostgrescockroachdbmssql
referential_constraints  
constraint_catalog VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
constraint_name VARCHAR NOT NULL:
5.7
VARCHAR NULL:
8
VARCHAR NOT NULL: NULL: unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: SYSNAME NULL:
constraint_schema VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL: NVARCHAR(128) NULL:
delete_rule ENUM NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported CHARACTER_DATA: CHARACTER_DATA NULL: VARCHAR(11) NULL:
match_option ENUM NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported CHARACTER_DATA: CHARACTER_DATA NULL: VARCHAR(7) NULL:
referenced_table_name VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported unsupported
2
unsupported
table_name VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported unsupported unsupported
unique_constraint_catalog VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL:
2
NVARCHAR(128) NULL:
unique_constraint_name VARCHAR NULL:
5.7-8
NULL: unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL:
2
SYSNAME NULL:
unique_constraint_schema VARCHAR NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported SQL_IDENTIFIER: SQL_IDENTIFIER NULL:
2
NVARCHAR(128) NULL:
update_rule ENUM NOT NULL:
5.7-8
VARCHAR NOT NULL: NULL: unsupported CHARACTER_DATA: CHARACTER_DATA NULL: VARCHAR(11) NULL: