32.20. referential_constraints

The view referential_constraints contains all referential (foreign key) constraints in the current database that belong to a table owned by the current user.

Table 32-18. referential_constraints Columns

NameData TypeDescription
constraint_catalogsql_identifierName of the database containing the constraint (always the current database)
constraint_schemasql_identifierName of the schema containing the constraint
constraint_namesql_identifierName of the constraint
unique_constraint_catalogsql_identifier Name of the database that contains the unique or primary key constraint that the foreign key constraint references (always the current database)
unique_constraint_schemasql_identifier Name of the schema that contains the unique or primary key constraint that the foreign key constraint references
unique_constraint_namesql_identifier Name of the unique or primary key constraint that the foreign key constraint references
match_optioncharacter_data Match option of the foreign key constraint: FULL, PARTIAL, or NONE.
update_rulecharacter_data Update rule of the foreign key constraint: CASCADE, SET NULL, SET DEFAULT, RESTRICT, or NO ACTION.
delete_rulecharacter_data Delete rule of the foreign key constraint: CASCADE, SET NULL, SET DEFAULT, RESTRICT, or NO ACTION.
not available in PostgreSQL