PostgreSQL

PostgreSQL Elephant Logo

51.55. pg_transform

The catalog pg_transform stores information about transforms, which are a mechanism to adapt data types to procedural languages. See CREATE TRANSFORM for more information.

Table 51.55. pg_transform Columns

Column Type Description

oid oid

Row identifier

trftype oid (references pg_type.oid)

OID of the data type this transform is for

trflang oid (references pg_language.oid)

OID of the language this transform is for

trffromsql regproc (references pg_proc.oid)

The OID of the function to use when converting the data type for input to the procedural language (e.g., function parameters). Zero is stored if this operation is not supported.

trftosql regproc (references pg_proc.oid)

The OID of the function to use when converting output from the procedural language (e.g., return values) to the data type. Zero is stored if this operation is not supported.

+

Prev Up Next

51.54. pg_tablespace

Home

51.56. pg_trigger

Submit correction

If you see anything in the documentation that is not correct, does not match your experience with the particular feature or requires further clarification, please use this form to report a documentation issue.

Copyright © 1996-2023 The PostgreSQL Global Development Group