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The patch does 2 things:

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Fixes  a  bug  in  the rule system that caused a crashing
        backend when a join-view with calculated column  is  used
        in subselect.

        Modifies  EXPLAIN to explain rewritten queries instead of
        the plain SeqScan on a view. Rules can produce very  deep
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Jan.
This commit is contained in:
Bruce Momjian
1998-10-21 16:21:29 +00:00
parent 858a3b570a
commit 524f4b2d10
6 changed files with 500 additions and 553 deletions
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6
src/backend/commands/recipe.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/recipe.c,v 1.24 1998/09/01 04:27:56 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/recipe.c,v 1.25 1998/10/21 16:21:21 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -350,8 +350,8 @@ tg_rewriteQuery(TgRecipe * r,
* need to offset the var nodes in the qual and targetlist
* because they are indexed off the original rtable
*/
OffsetVarNodes((Node *) inputQ->qual, rt_length);
OffsetVarNodes((Node *) inputQ->targetList, rt_length);
OffsetVarNodes((Node *) inputQ->qual, rt_length, 0);
OffsetVarNodes((Node *) inputQ->targetList, rt_length, 0);
/* append the range tables from the children nodes */
rtable = nconc(rtable, input_rtable);