PostgreSQL: Documentation: 15: 37.55. transforms

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37.55. `transforms`
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37.55. `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 37.53. transforms Columns

Column 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 37.45 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`

Column 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 37.45 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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