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Put back adjust_appendrel_attrs()'s code for dealing with RestrictInfo.

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I mistakenly removed it last month, thinking it was no longer needed ---
but it is still needed for dealing with joininfo lists.  Fortunately this
bit of brain fade hadn't made it into any released versions yet.
This commit is contained in:
Tom Lane 2009-08-13 16:53:09 +00:00
parent b6bde524af
commit f959390cd0
1 changed files with 57 additions and 2 deletions
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59
src/backend/optimizer/prep/prepunion.c
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@ -22,7 +22,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.172 2009/07/06 18:26:30 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.173 2009/08/13 16:53:09 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1636,7 +1636,62 @@ adjust_appendrel_attrs_mutator(Node *node, AppendRelInfo *context)
Assert(!IsA(node, SpecialJoinInfo));
Assert(!IsA(node, AppendRelInfo));
Assert(!IsA(node, PlaceHolderInfo));
Assert(!IsA(node, RestrictInfo));
/*
* We have to process RestrictInfo nodes specially. (Note: although
* set_append_rel_pathlist will hide RestrictInfos in the parent's
* baserestrictinfo list from us, it doesn't hide those in joininfo.)
*/
if (IsA(node, RestrictInfo))
{
RestrictInfo *oldinfo = (RestrictInfo *) node;
RestrictInfo *newinfo = makeNode(RestrictInfo);
/* Copy all flat-copiable fields */
memcpy(newinfo, oldinfo, sizeof(RestrictInfo));
/* Recursively fix the clause itself */
newinfo->clause = (Expr *)
adjust_appendrel_attrs_mutator((Node *) oldinfo->clause, context);
/* and the modified version, if an OR clause */
newinfo->orclause = (Expr *)
adjust_appendrel_attrs_mutator((Node *) oldinfo->orclause, context);
/* adjust relid sets too */
newinfo->clause_relids = adjust_relid_set(oldinfo->clause_relids,
context->parent_relid,
context->child_relid);
newinfo->required_relids = adjust_relid_set(oldinfo->required_relids,
context->parent_relid,
context->child_relid);
newinfo->nullable_relids = adjust_relid_set(oldinfo->nullable_relids,
context->parent_relid,
context->child_relid);
newinfo->left_relids = adjust_relid_set(oldinfo->left_relids,
context->parent_relid,
context->child_relid);
newinfo->right_relids = adjust_relid_set(oldinfo->right_relids,
context->parent_relid,
context->child_relid);
/*
* Reset cached derivative fields, since these might need to have
* different values when considering the child relation.
*/
newinfo->eval_cost.startup = -1;
newinfo->norm_selec = -1;
newinfo->outer_selec = -1;
newinfo->left_ec = NULL;
newinfo->right_ec = NULL;
newinfo->left_em = NULL;
newinfo->right_em = NULL;
newinfo->scansel_cache = NIL;
newinfo->left_bucketsize = -1;
newinfo->right_bucketsize = -1;
return (Node *) newinfo;
}
/*
* NOTE: we do not need to recurse into sublinks, because they should