# 37.52. table_constraints

The view table_constraints contains all constraints belonging to tables that the current user owns or has some privilege other than SELECT on.

Table 37.50. table_constraints Columns

Column Type

Description
constraint_catalog sql_identifier

Name of the database that contains the constraint (always the current database)
constraint_schema sql_identifier

Name of the schema that contains the constraint
constraint_name sql_identifier

Name of the constraint
table_catalog sql_identifier

Name of the database that contains the table (always the current database)
table_schema sql_identifier

Name of the schema that contains the table
table_name sql_identifier

Name of the table
constraint_type character_data

Type of the constraint: CHECK, FOREIGN KEY, PRIMARY KEY, or UNIQUE
is_deferrable yes_or_no

YES if the constraint is deferrable, NO if not
initially_deferred yes_or_no

YES if the constraint is deferrable and initially deferred, NO if not
enforced yes_or_no

Applies to a feature not available in PostgreSQL (currently always YES)