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 34-7. check_constraints Columns
|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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