diff options
Diffstat (limited to 'src/backend/access/nbtree/nbtinsert.c')
| -rw-r--r-- | src/backend/access/nbtree/nbtinsert.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/backend/access/nbtree/nbtinsert.c b/src/backend/access/nbtree/nbtinsert.c index b84bf1c3dfa..b93b2a0ffd6 100644 --- a/src/backend/access/nbtree/nbtinsert.c +++ b/src/backend/access/nbtree/nbtinsert.c @@ -2230,10 +2230,10 @@ _bt_newroot(Relation rel, Buffer lbuf, Buffer rbuf) * * The main difference between this routine and a bare PageAddItem call * is that this code knows that the leftmost index tuple on a non-leaf - * btree page doesn't need to have a key. Therefore, it strips such - * tuples down to just the tuple header. CAUTION: this works ONLY if - * we insert the tuples in order, so that the given itup_off does - * represent the final position of the tuple! + * btree page has a key that must be treated as minus infinity. + * Therefore, it truncates away all attributes. CAUTION: this works + * ONLY if we insert the tuples in order, so that the given itup_off + * does represent the final position of the tuple! */ static bool _bt_pgaddtup(Page page, @@ -2248,7 +2248,6 @@ _bt_pgaddtup(Page page, { trunctuple = *itup; trunctuple.t_info = sizeof(IndexTupleData); - /* Deliberately zero INDEX_ALT_TID_MASK bits */ BTreeTupleSetNAtts(&trunctuple, 0); itup = &trunctuple; itemsize = sizeof(IndexTupleData); |