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Fix explain for union and inheritance. Rename Append structure

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members to be clearer.  Fix cost computation for these.
This commit is contained in:
Bruce Momjian
1998-07-15 14:54:39 +00:00
parent 9fdbbdc877
commit 9e964f90fb
10 changed files with 185 additions and 128 deletions
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37
src/backend/commands/explain.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.19 1998/04/27 16:57:09 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.20 1998/07/15 14:54:29 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -20,6 +20,7 @@
#include <tcop/tcopprot.h>
#include <lib/stringinfo.h>
#include <commands/explain.h>
#include <parser/parsetree.h>
#include <parser/parse_node.h>
#include <optimizer/planner.h>
#include <access/xact.h>
@ -269,6 +270,40 @@ explain_outNode(StringInfo str, Plan *plan, int indent, ExplainState *es)
}
es->rtable = saved_rtable;
}
if (nodeTag(plan) == T_Append)
{
List *saved_rtable = es->rtable;
List *lst;
int whichplan = 0;
Append *appendplan = (Append *)plan;
foreach(lst, appendplan->appendplans)
{
Plan *subnode = (Plan *)lfirst(lst);
if (appendplan->inheritrelid > 0)
{
ResTarget *rtentry;
es->rtable = appendplan->inheritrtable;
rtentry = nth(whichplan, appendplan->inheritrtable);
Assert(rtentry != NULL);
rt_store(appendplan->inheritrelid, es->rtable, rtentry);
}
else
es->rtable = nth(whichplan, appendplan->unionrtables);
for (i = 0; i < indent; i++)
appendStringInfo(str, " ");
appendStringInfo(str, " -> ");
explain_outNode(str, subnode, indent + 4, es);
whichplan++;
}
es->rtable = saved_rtable;
}
return;
}