PostgreSQL 9.4.0 Documentation
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# 34.8. `check_constraint_routine_usage`

The view `check_constraint_routine_usage` identifies routines (functions and procedures) that are used by a check constraint. Only those routines are shown that are owned by a currently enabled role.

Table 34-6. `check_constraint_routine_usage` 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
`specific_catalog` | `sql_identifier` | Name of the database containing the function (always the current database)
`specific_schema` | `sql_identifier` | Name of the schema containing the function
`specific_name` | `sql_identifier` | The "specific name" of the function. See Section 34.40 for more information.

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