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).
|Name of the database that contains the type the transform is for (always the current database)|
|Name of the schema that contains the type the transform is for|
|Name of the type the transform is for|
|Name of the database containing the function (always the current database)|
|Name of the schema containing the function|
|The “specific name” of the function. See Section 34.40 for more information.|
|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.|