FUNCTIONS / SYSTEM INFORMATION FUNCTIONS AND OPERATORS

pg_get_expr

Decompiles the internal form of an expression stored in the system catalogs, such as the default value for a column.

Signatures & examples

pg_get_expr ( expr pg_node_tree, relation oid [, pretty boolean ] ) → text

Decompiles the internal form of an expression stored in the system catalogs, such as the default value for a column. If the expression might contain Vars, specify the OID of the relation they refer to as the second parameter; if no Vars are expected, passing zero is sufficient.

Version history 2

PG 12 → 13changed
PG 9.0 → 9.1changed

Definition snapshot: 2026-09-14T13:14:25.684213+00:00@99e6866c · English manual source