50.55. 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 50.55. pg_transform Columns
Column Type Description |
|---|
Row identifier |
OID of the data type this transform is for |
OID of the language this transform is for |
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. |
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. |