SYSTEM CATALOGS / SYSTEM CATALOGS
pg_transform
Read PG 18 manual ↗The catalog pg_transform stores information about transforms, which are a mechanism to adapt data types to procedural languages.
- Kind
- System catalogs
- Columns in this snapshot
- 5
- Definition source
- English manual
Columns 5
| Column | Type | Description / reference |
|---|---|---|
oid | oid | Row identifier |
trftype | oid | OID of the data type this transform is for pg_type.oid |
trflang | oid | OID of the language this transform is for pg_language.oid |
trffromsql | regproc | 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 the default behavior should be used. pg_proc.oid |
trftosql | regproc | 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 the default behavior should be used. pg_proc.oid |
Column history across versions
Version history 3
- PG 13 → 14changed
- PG 12 → 13changed
- PG 9.4 → 9.5added
Definition snapshot: english-manuals:b40849b4d2f841e50486639a2f7… · English manual source