diff options
Diffstat (limited to 'src/include/access/nbtree.h')
| -rw-r--r-- | src/include/access/nbtree.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h index 1194be92811..892aeca3003 100644 --- a/src/include/access/nbtree.h +++ b/src/include/access/nbtree.h @@ -227,6 +227,20 @@ typedef struct BTMetaPageData ItemPointerSetBlockNumber(&((itup)->t_tid), (blkno)) /* + * Get/set leaf page highkey's link. During the second phase of deletion, the + * target leaf page's high key may point to an ancestor page (at all other + * times, the leaf level high key's link is not used). See the nbtree README + * for full details. + */ +#define BTreeTupleGetTopParent(itup) \ + ItemPointerGetBlockNumberNoCheck(&((itup)->t_tid)) +#define BTreeTupleSetTopParent(itup, blkno) \ + do { \ + ItemPointerSetBlockNumber(&((itup)->t_tid), (blkno)); \ + BTreeTupleSetNAtts((itup), 0); \ + } while(0) + +/* * Get/set number of attributes within B-tree index tuple. Asserts should be * removed when BT_RESERVED_OFFSET_MASK bits will be used. */ |