From: Peter Geoghegan <pg@bowt.ie>
Date: Fri, 1 Nov 2024 15:43:24 +0000 (-0400)
Subject: Clarify nbtree array preprocessing comment.
X-Git-Tag: REL_18_BETA1~1573
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=fc7ddededb9ee466d20581b966e01a3566b9559f;p=postgresql.git

Clarify nbtree array preprocessing comment.

Oversight in commit 5bf748b8.
---

diff --git a/src/backend/access/nbtree/nbtutils.c b/src/backend/access/nbtree/nbtutils.c
index 14253ead8bd..1b75066fb51 100644
--- a/src/backend/access/nbtree/nbtutils.c
+++ b/src/backend/access/nbtree/nbtutils.c
@@ -2901,8 +2901,9 @@ _bt_preprocess_keys(IndexScanDesc scan)
 						 * ...unless we have to keep the old key because it's
 						 * an array that rendered the new key redundant.  We
 						 * need to make sure that we don't throw away an array
-						 * scan key.  _bt_compare_scankey_args expects us to
-						 * always keep arrays (and discard non-arrays).
+						 * scan key.  _bt_preprocess_array_keys_final expects
+						 * us to keep all of the arrays that weren't already
+						 * eliminated by _bt_preprocess_array_keys earlier on.
 						 */
 						Assert(!(inkey->sk_flags & SK_SEARCHARRAY));
 					}