The pg_amproc catalog provides information about support functions associated with access method operator families.
| Column name | Data type | Description |
|---|---|---|
oid |
oid |
A row identifier. |
amprocfamily |
oid (references pg_opfamily.oid) |
The operator family to which this entry belongs. |
amproclefttype |
oid (references pg_type.oid) |
The left-hand input data type of the associated operator. |
amprocrighttype |
oid (references pg_type.oid) |
The right-hand input data type of the associated operator. |
amprocnum |
int2 |
A support function number. |
amproc |
regproc (references pg_proc.oid) |
The OID of the support function. |