The view column_udt_usage identifies all columns that use data types owned by a currently enabled role. Note that in PostgreSQL, built-in data types behave like user-defined types, so they are included here as well. See also Section 34.16 for details.
Table 34-13. column_udt_usage Columns
|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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