---
title: "`check_constraint_routine_usage`"
id: infoschema-check-constraint-routine-usage
pg_version: "20devel"
---

<a id="infoschema-check-constraint-routine-usage"></a>

## 35.8. `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. 

**check_constraint_routine_usage Columns**

| Column 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 35.55](infoschema-routines.md) for more information. |