diff options
Diffstat (limited to 'src/backend/access/nbtree/nbtsearch.c')
| -rw-r--r-- | src/backend/access/nbtree/nbtsearch.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/src/backend/access/nbtree/nbtsearch.c b/src/backend/access/nbtree/nbtsearch.c index 8f559629cd5..472ce06f190 100644 --- a/src/backend/access/nbtree/nbtsearch.c +++ b/src/backend/access/nbtree/nbtsearch.c @@ -1162,23 +1162,23 @@ _bt_first(IndexScanDesc scan, ScanDirection dir) if (cur->sk_flags & SK_ROW_HEADER) { /* - * Row comparison header: look to the first row member instead. - * - * The member scankeys are already in insertion format (ie, they - * have sk_func = 3-way-comparison function), but we have to watch - * out for nulls, which _bt_preprocess_keys didn't check. A null - * in the first row member makes the condition unmatchable, just - * like qual_ok = false. + * Row comparison header: look to the first row member instead */ ScanKey subkey = (ScanKey) DatumGetPointer(cur->sk_argument); + /* + * Cannot be a NULL in the first row member: _bt_preprocess_keys + * would've marked the qual as unsatisfiable, preventing us from + * ever getting this far + */ Assert(subkey->sk_flags & SK_ROW_MEMBER); - if (subkey->sk_flags & SK_ISNULL) - { - Assert(!so->needPrimScan); - _bt_parallel_done(scan); - return false; - } + Assert(subkey->sk_attno == cur->sk_attno); + Assert(!(subkey->sk_flags & SK_ISNULL)); + + /* + * The member scankeys are already in insertion format (ie, they + * have sk_func = 3-way-comparison function) + */ memcpy(inskey.scankeys + i, subkey, sizeof(ScanKeyData)); /* |