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Repair oversight in creation of "append relations": we should set up

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rel->tuples as well as rel->rows, since some estimation functions expect both
to be valid in every baserel.  Per report from Dave Dutcher.
This commit is contained in:
Tom Lane 2007-01-28 18:50:48 +00:00
parent 8a114e0031
commit 01d9754bd9
1 changed files with 7 additions and 1 deletions
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8
src/backend/optimizer/path/allpaths.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.154 2006/10/04 00:29:53 momjian Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.154.2.1 2007/01/28 18:50:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -383,6 +383,12 @@ set_append_rel_pathlist(PlannerInfo *root, RelOptInfo *rel,
}
}
/*
* Set "raw tuples" count equal to "rows" for the appendrel; needed
* because some places assume rel->tuples is valid for any baserel.
*/
rel->tuples = rel->rows;
/*
* Finally, build Append path and install it as the only access path for
* the parent rel. (Note: this is correct even if we have zero or one