From d0169d5379ddac658664fc217792e68b6e8fe9c3 Mon Sep 17 00:00:00 2001 From: "Paul A. Jungwirth" Date: Tue, 2 Dec 2025 21:30:13 -0800 Subject: [PATCH v65 1/7] Add range_get_constructor2 to lsyscache Look up the two-arg constructor for a given rangetype. We need this for UPDATE/DELETE FOR PORTION OF, so that we can build a range from the FROM/TO bounds. Author: Paul A. Jungwirth --- src/backend/utils/cache/lsyscache.c | 25 +++++++++++++++++++++++++ src/include/utils/lsyscache.h | 1 + 2 files changed, 26 insertions(+) diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index b924a2d900b..5fd074afe1e 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -3598,6 +3598,31 @@ get_range_collation(Oid rangeOid) return InvalidOid; } +/* + * get_range_constructor2 + * Gets the 2-arg constructor for the given rangetype. + * + * Raises an error if not found. + */ +RegProcedure +get_range_constructor2(Oid rangeOid) +{ + HeapTuple tp; + + tp = SearchSysCache1(RANGETYPE, ObjectIdGetDatum(rangeOid)); + if (HeapTupleIsValid(tp)) + { + Form_pg_range rngtup = (Form_pg_range) GETSTRUCT(tp); + RegProcedure result; + + result = rngtup->rngconstruct2; + ReleaseSysCache(tp); + return result; + } + else + elog(ERROR, "cache lookup failed for range type %u", rangeOid); +} + /* * get_range_multirange * Returns the multirange type of a given range type diff --git a/src/include/utils/lsyscache.h b/src/include/utils/lsyscache.h index 5655aca4c14..5b9d1460e66 100644 --- a/src/include/utils/lsyscache.h +++ b/src/include/utils/lsyscache.h @@ -200,6 +200,7 @@ extern char *get_namespace_name(Oid nspid); extern char *get_namespace_name_or_temp(Oid nspid); extern Oid get_range_subtype(Oid rangeOid); extern Oid get_range_collation(Oid rangeOid); +extern Oid get_range_constructor2(Oid rangeOid); extern Oid get_range_multirange(Oid rangeOid); extern Oid get_multirange_range(Oid multirangeOid); extern Oid get_index_column_opclass(Oid index_oid, int attno); -- 2.47.3