diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/access/nbtree.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h index 22840942e3f..20ace69dab4 100644 --- a/src/include/access/nbtree.h +++ b/src/include/access/nbtree.h @@ -263,9 +263,8 @@ typedef struct BTMetaPageData * offset field only stores the number of columns/attributes when the * INDEX_ALT_TID_MASK bit is set, which doesn't count the trailing heap * TID column sometimes stored in pivot tuples -- that's represented by - * the presence of BT_HEAP_TID_ATTR. The INDEX_ALT_TID_MASK bit in t_info - * is always set on BTREE_VERSION 4. BT_HEAP_TID_ATTR can only be set on - * BTREE_VERSION 4. + * the presence of BT_PIVOT_HEAP_TID_ATTR. The INDEX_ALT_TID_MASK bit in + * t_info is always set on BTREE_VERSION 4 pivot tuples. * * In version 3 indexes, the INDEX_ALT_TID_MASK flag might not be set in * pivot tuples. In that case, the number of key columns is implicitly @@ -296,7 +295,7 @@ typedef struct BTMetaPageData /* Item pointer offset bits */ #define BT_RESERVED_OFFSET_MASK 0xF000 #define BT_N_KEYS_OFFSET_MASK 0x0FFF -#define BT_HEAP_TID_ATTR 0x1000 +#define BT_PIVOT_HEAP_TID_ATTR 0x1000 /* Get/set downlink block number in pivot tuple */ #define BTreeTupleGetDownLink(itup) \ @@ -347,7 +346,7 @@ typedef struct BTMetaPageData #define BTreeTupleGetHeapTID(itup) \ ( \ (itup)->t_info & INDEX_ALT_TID_MASK && \ - (ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) & BT_HEAP_TID_ATTR) != 0 ? \ + (ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) & BT_PIVOT_HEAP_TID_ATTR) != 0 ? \ ( \ (ItemPointer) (((char *) (itup) + IndexTupleSize(itup)) - \ sizeof(ItemPointerData)) \ @@ -362,7 +361,7 @@ typedef struct BTMetaPageData do { \ Assert((itup)->t_info & INDEX_ALT_TID_MASK); \ ItemPointerSetOffsetNumber(&(itup)->t_tid, \ - ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) | BT_HEAP_TID_ATTR); \ + ItemPointerGetOffsetNumberNoCheck(&(itup)->t_tid) | BT_PIVOT_HEAP_TID_ATTR); \ } while(0) /* |