PostgreSQL 7.4 Documentation
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# 32.8. column_udt_usage

The view column_udt_usage identifies all columns that use data types owned by the current user. Note that in PostgreSQL, built-in data types behave like user-defined types, so they are included here as well. See also Section 32.9 for details.

Table 32-6. column_udt_usage Columns

Name | Data Type | Description
--- | --- | ---
udt_catalog | `sql_identifier` | Name of the database that the column data type (the underlying type of the domain, if applicable) is defined in (always the current database)
udt_schema | `sql_identifier` | Name of the schema that the column data type (the underlying type of the domain, if applicable) is defined in
udt_name | `sql_identifier` | Name of the column data type (the underlying type of the domain, if applicable)
table_catalog | `sql_identifier` | Name of the database containing the table (always the current database)
table_schema | `sql_identifier` | Name of the schema containing the table
table_name | `sql_identifier` | Name of the table
column_name | `sql_identifier` | Name of the column

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