18th October 2018: PostgreSQL 11 Released!
Supported Versions: Current (11) / 10 / 9.6 / 9.5
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37.53. transforms

The view transforms contains information about the transforms defined in the current database. More precisely, it contains a row for each function contained in a transform (the from SQL or to SQL function).

Table 37.51. transforms Columns

Name Data Type Description
udt_catalog sql_identifier Name of the database that contains the type the transform is for (always the current database)
udt_schema sql_identifier Name of the schema that contains the type the transform is for
udt_name sql_identifier Name of the type the transform is for
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 37.40 for more information.
group_name sql_identifier The SQL standard allows defining transforms in groups, and selecting a group at run time. PostgreSQL does not support this. Instead, transforms are specific to a language. As a compromise, this field contains the language the transform is for.
transform_type character_data FROM SQL or TO SQL

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