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Fix multicolumn GIN's wrong results with fastupdate enabled.

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User-defined consistent functions believes the check array
contains at least one true element which was not a true for
scanning pending list.

Per report from Yury Don <yura@vpcit.ru>
This commit is contained in:
Teodor Sigaev 2009-11-13 11:17:04 +00:00
parent 0894c6b838
commit 5e75f6790c
1 changed files with 25 additions and 9 deletions
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26
src/backend/access/gin/ginget.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/ginget.c,v 1.27 2009/06/11 14:48:53 momjian Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/ginget.c,v 1.28 2009/11/13 11:17:04 teodor Exp $
*-------------------------------------------------------------------------
*/
@ -29,6 +29,7 @@ typedef struct pendingPosition
OffsetNumber firstOffset;
OffsetNumber lastOffset;
ItemPointerData item;
bool *hasMatchKey;
} pendingPosition;
@ -873,6 +874,18 @@ matchPartialInPendingList(GinState *ginstate, Page page,
return false;
}
static bool
hasAllMatchingKeys(GinScanOpaque so, pendingPosition *pos)
{
int i;
for (i = 0; i < so->nkeys; i++)
if (pos->hasMatchKey[i] == false)
return false;
return true;
}
/*
* Sets entryRes array for each key by looking at
* every entry per indexed value (heap's row) in pending list.
@ -889,7 +902,6 @@ collectDatumForItem(IndexScanDesc scan, pendingPosition *pos)
IndexTuple itup;
int i,
j;
bool hasMatch = false;
/*
* Resets entryRes
@ -900,6 +912,7 @@ collectDatumForItem(IndexScanDesc scan, pendingPosition *pos)
memset(key->entryRes, FALSE, key->nentries);
}
memset(pos->hasMatchKey, FALSE, so->nkeys);
for (;;)
{
@ -1005,7 +1018,7 @@ collectDatumForItem(IndexScanDesc scan, pendingPosition *pos)
entry->extra_data);
}
hasMatch |= key->entryRes[j];
pos->hasMatchKey[i] |= key->entryRes[j];
}
}
@ -1017,7 +1030,7 @@ collectDatumForItem(IndexScanDesc scan, pendingPosition *pos)
* We scan all values from one tuple, go to next one
*/
return hasMatch;
return hasAllMatchingKeys(so, pos);
}
else
{
@ -1034,7 +1047,7 @@ collectDatumForItem(IndexScanDesc scan, pendingPosition *pos)
}
}
return hasMatch;
return hasAllMatchingKeys(so, pos);
}
/*
@ -1073,6 +1086,7 @@ scanPendingInsert(IndexScanDesc scan, TIDBitmap *tbm, int64 *ntids)
LockBuffer(pos.pendingBuffer, GIN_SHARE);
pos.firstOffset = FirstOffsetNumber;
UnlockReleaseBuffer(metabuffer);
pos.hasMatchKey = palloc(sizeof(bool) * so->nkeys);
/*
* loop for each heap row. scanGetCandidate returns full row or row's
@ -1126,6 +1140,8 @@ scanPendingInsert(IndexScanDesc scan, TIDBitmap *tbm, int64 *ntids)
(*ntids)++;
}
}
pfree(pos.hasMatchKey);
}
/*