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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2002-05-24 18:57:57 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2002-05-24 18:57:57 +0000 |
| commit | 3f4d48802271126b1343289a9d2267ff1ed3788a (patch) | |
| tree | b8c7507719ba240834e28cfbb56e2badff118b7e /src/include/executor | |
| parent | 2f2d05763d1c55c7998c0d7030659e3db6f60183 (diff) | |
| download | postgresql-3f4d48802271126b1343289a9d2267ff1ed3788a.tar.gz | |
Mark index entries "killed" when they are no longer visible to any
transaction, so as to avoid returning them out of the index AM. Saves
repeated heap_fetch operations on frequently-updated rows. Also detect
queries on unique keys (equality to all columns of a unique index), and
don't bother continuing scan once we have found first match.
Killing is implemented in the btree and hash AMs, but not yet in rtree
or gist, because there isn't an equally convenient place to do it in
those AMs (the outer amgetnext routine can't do it without re-pinning
the index page).
Did some small cleanup on APIs of HeapTupleSatisfies, heap_fetch, and
index_insert to make this a little easier.
Diffstat (limited to 'src/include/executor')
| -rw-r--r-- | src/include/executor/executor.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h index 6752d72ca7..293550e568 100644 --- a/src/include/executor/executor.h +++ b/src/include/executor/executor.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: executor.h,v 1.64 2002/05/12 20:10:04 tgl Exp $ + * $Id: executor.h,v 1.65 2002/05/24 18:57:57 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -170,7 +170,7 @@ extern ExprContext *MakePerTupleExprContext(EState *estate); extern void ExecOpenIndices(ResultRelInfo *resultRelInfo); extern void ExecCloseIndices(ResultRelInfo *resultRelInfo); extern void ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid, - EState *estate, bool is_update); + EState *estate, bool is_vacuum); extern void RegisterExprContextCallback(ExprContext *econtext, ExprContextCallbackFunction function, |