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Fix obsolete comment. It's no longer the case that Param nodes don't

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carry typmod.
This commit is contained in:
Tom Lane
2008-08-20 15:49:30 +00:00
parent 0ba9b565b9
commit 390e59cd5f
1 changed files with 4 additions and 9 deletions
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13
src/backend/optimizer/plan/subselect.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.135 2008/08/17 02:19:19 tgl Exp $ * $PostgreSQL: pgsql/src/backend/optimizer/plan/subselect.c,v 1.136 2008/08/20 15:49:30 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -94,14 +94,9 @@ replace_outer_var(PlannerInfo *root, Var *var)
* NOTE: in sufficiently complex querytrees, it is possible for the same * NOTE: in sufficiently complex querytrees, it is possible for the same
* varno/abslevel to refer to different RTEs in different parts of the * varno/abslevel to refer to different RTEs in different parts of the
* parsetree, so that different fields might end up sharing the same Param * parsetree, so that different fields might end up sharing the same Param
* number. As long as we check the vartype as well, I believe that this * number. As long as we check the vartype/typmod as well, I believe that
* sort of aliasing will cause no trouble. The correct field should get * this sort of aliasing will cause no trouble. The correct field should
* stored into the Param slot at execution in each part of the tree. * get stored into the Param slot at execution in each part of the tree.
*
* We also need to demand a match on vartypmod. This does not matter for
* the Param itself, since those are not typmod-dependent, but it does
* matter when make_subplan() instantiates a modified copy of the Var for
* a subplan's args list.
*/ */
i = 0; i = 0;
foreach(ppl, root->glob->paramlist) foreach(ppl, root->glob->paramlist)