diff options
Diffstat (limited to 'src/backend/access/index/indexam.c')
| -rw-r--r-- | src/backend/access/index/indexam.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/backend/access/index/indexam.c b/src/backend/access/index/indexam.c index 7a06d0074e8..ece3ae8ea40 100644 --- a/src/backend/access/index/indexam.c +++ b/src/backend/access/index/indexam.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/access/index/indexam.c,v 1.106 2008/04/12 23:14:21 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/index/indexam.c,v 1.107 2008/04/13 19:18:14 tgl Exp $ * * INTERFACE ROUTINES * index_open - open an index relation by relation OID @@ -402,6 +402,10 @@ index_restrpos(IndexScanDesc scan) * snapshot, or NULL if no more matching tuples exist. On success, * the buffer containing the heap tuple is pinned (the pin will be dropped * at the next index_getnext or index_endscan). + * + * Note: caller must check scan->xs_recheck, and perform rechecking of the + * scan keys if required. We do not do that here because we don't have + * enough information to do it efficiently in the general case. * ---------------- */ HeapTuple @@ -455,6 +459,8 @@ index_getnext(IndexScanDesc scan, ScanDirection direction) /* * The AM's gettuple proc finds the next index entry matching the * scan keys, and puts the TID in xs_ctup.t_self (ie, *tid). + * It should also set scan->xs_recheck, though we pay no + * attention to that here. */ found = DatumGetBool(FunctionCall2(procedure, PointerGetDatum(scan), |