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show the index used in an explain

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From: Zeugswetter Andreas SARZ <Andreas.Zeugswetter@telecom.at>
This commit is contained in:
Marc G. Fournier 1998-04-27 16:57:09 +00:00
parent 6d817475b2
commit 5e202d8586
1 changed files with 9 additions and 2 deletions
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11
src/backend/commands/explain.c
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@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.18 1998/02/26 04:30:58 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.19 1998/04/27 16:57:09 scrappy Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -23,6 +23,7 @@
#include <parser/parse_node.h> #include <parser/parse_node.h>
#include <optimizer/planner.h> #include <optimizer/planner.h>
#include <access/xact.h> #include <access/xact.h>
#include <utils/relcache.h>
typedef struct ExplainState typedef struct ExplainState
{ {
@ -117,6 +118,8 @@ ExplainQuery(Query *query, bool verbose, CommandDest dest)
static void static void
explain_outNode(StringInfo str, Plan *plan, int indent, ExplainState *es) explain_outNode(StringInfo str, Plan *plan, int indent, ExplainState *es)
{ {
List *l;
Relation relation;
char *pname; char *pname;
char buf[1000]; char buf[1000];
int i; int i;
@ -184,8 +187,12 @@ explain_outNode(StringInfo str, Plan *plan, int indent, ExplainState *es)
appendStringInfo(str, pname); appendStringInfo(str, pname);
switch (nodeTag(plan)) switch (nodeTag(plan))
{ {
case T_SeqScan:
case T_IndexScan: case T_IndexScan:
appendStringInfo(str, " using ");
l = ((IndexScan *) plan)->indxid;
relation = RelationIdCacheGetRelation((int) lfirst(l));
appendStringInfo(str, (RelationGetRelationName(relation))->data);
case T_SeqScan:
if (((Scan *) plan)->scanrelid > 0) if (((Scan *) plan)->scanrelid > 0)
{ {
RangeTblEntry *rte = nth(((Scan *) plan)->scanrelid - 1, es->rtable); RangeTblEntry *rte = nth(((Scan *) plan)->scanrelid - 1, es->rtable);