| PostgreSQL 8.0.12 Documentation | ||||
|---|---|---|---|---|
| Prev | Fast Backward | Chapter 30. The Information Schema | Fast Forward | Next |
The view constraint_column_usage identifies all columns in the current database that are used by some constraint. Only those columns are shown that are contained in a table owned the current user. For a check constraint, this view identifies the columns that are used in the check expression. For a foreign key constraint, this view identifies the columns that the foreign key references. For a unique or primary key constraint, this view identifies the constrained columns.
Table 30-8. constraint_column_usage Columns
| Name | Data Type | Description |
|---|---|---|
| table_catalog | sql_identifier | Name of the database that contains the table that contains the column that is used by some constraint (always the current database) |
| table_schema | sql_identifier | Name of the schema that contains the table that contains the column that is used by some constraint |
| table_name | sql_identifier | Name of the table that contains the column that is used by some constraint |
| column_name | sql_identifier | Name of the column that is used by some constraint |
| constraint_catalog | sql_identifier | Name of the database that contains the constraint (always the current database) |
| constraint_schema | sql_identifier | Name of the schema that contains the constraint |
| constraint_name | sql_identifier | Name of the constraint |
No comments could be found for this page.
Please use this form to add your own comments regarding your experience with particular features of PostgreSQL, clarifications of the documentation, or hints for other users. Please note, this is not a support forum, and your IP address will be logged. If you have a question or need help, please see the faq, try a mailing list, or join us on IRC. Note that submissions containing URLs or other keywords commonly found in 'spam' comments may be silently discarded. Please contact the webmaster if you think this is happening to you in error.
In order to submit a comment, you must have a community account.
* denotes required field