PostgreSQL 7.4 Documentation
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# 32.5. check_constraints

The view check_constraints contains all check constraints, either defined on a table or on a domain, that are owned by the current user. (The owner of the table or domain is the owner of the constraint.)

Table 32-3. check_constraints Columns

Name | Data Type | Description
--- | --- | ---
constraint_catalog | sql_identifier | Name of the database containing the constraint (always the current database)
constraint_schema | sql_identifier | Name of the schema containing the constraint
constraint_name | sql_identifier | Name of the constraint
check_clause | character_data | The check expression of the check constraint

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