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PostgreSQL 8.3.23 Documentation
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33.8. check_constraints

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

Table 33-6. 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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