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| author | Peter Geoghegan <pg@bowt.ie> | 2023-04-10 17:55:23 -0700 |
|---|---|---|
| committer | Peter Geoghegan <pg@bowt.ie> | 2023-04-10 17:55:23 -0700 |
| commit | 26e65ebdb295fc88988655dbbf30c9fd020e2e07 (patch) | |
| tree | 54ec3e590f81494a5eb9c818f456e882ac028b8b | |
| parent | 4380c2509d51febad34e1fac0cfaeb98aaa716c5 (diff) | |
| download | postgresql-26e65ebdb295fc88988655dbbf30c9fd020e2e07.tar.gz postgresql-26e65ebdb295fc88988655dbbf30c9fd020e2e07.zip | |
Clarify nbtree posting list update desc issue.
Per complaint from Melanie Plageman.
Follow-up to commit 5d6728e5.
Reported-By: Melanie Plageman <melanieplageman@gmail.com>
Discussion: https://postgr.es/m/20230411002315.oyaicmcqrq2hb3ek@liskov
| -rw-r--r-- | src/backend/access/rmgrdesc/nbtdesc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/backend/access/rmgrdesc/nbtdesc.c b/src/backend/access/rmgrdesc/nbtdesc.c index 0db3274dc51..c50d5547de8 100644 --- a/src/backend/access/rmgrdesc/nbtdesc.c +++ b/src/backend/access/rmgrdesc/nbtdesc.c @@ -223,6 +223,11 @@ delvacuum_desc(StringInfo buf, char *block_data, Assert(OffsetNumberIsValid(off)); Assert(updates->ndeletedtids > 0); + /* + * "ptid" is the symbol name used when building each xl_btree_update's + * array of offsets into a posting list tuple's ItemPointerData array. + * xl_btree_update describes a subset of the existing TIDs to delete. + */ appendStringInfo(buf, "{ off: %u, nptids: %u, ptids: [", off, updates->ndeletedtids); for (int p = 0; p < updates->ndeletedtids; p++) |