diff options
| -rw-r--r-- | src/include/access/nbtree.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h index 8dcfe5674c6..6a501537e1e 100644 --- a/src/include/access/nbtree.h +++ b/src/include/access/nbtree.h @@ -702,6 +702,11 @@ BTreeTupleGetMaxHeapTID(IndexTuple itup) * To facilitate B-Tree deduplication, an operator class may choose to * offer a forth amproc procedure (BTEQUALIMAGE_PROC). For full details, * see doc/src/sgml/btree.sgml. + * + * An operator class may choose to offer a fifth amproc procedure + * (BTOPTIONS_PROC). These procedures define a set of user-visible + * parameters that can be used to control operator class behavior. None of + * the built-in B-Tree operator classes currently register an "options" proc. */ #define BTORDER_PROC 1 |