From ac376a3eb9ff779753955422f7facd6d26e7d801 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 14 Oct 2002 04:26:54 +0000
Subject: [PATCH] As Niel so nicely pointed out this morning, the output of
EXPLAIN ANALYZE is not quite clear when branches of the query are never
executed. So this tiny patch fixes that.
The patch is attached and can also be found at:
http://svana.org/kleptog/pgsql/pgsql-explain.patch
Martijn van Oosterhout
---
src/backend/commands/explain.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index 2478c4f769f..f0aabc9dc8d 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -5,7 +5,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994-5, Regents of the University of California
*
- * $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.88 2002/09/19 22:48:33 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.89 2002/10/14 04:26:54 momjian Exp $
*
*/
@@ -35,6 +35,7 @@ typedef struct ExplainState
/* options */
bool printCost; /* print cost */
bool printNodes; /* do nodeToString() instead */
+ bool printAnalyze; /* print actual times */
/* other states */
List *rtable; /* range table */
} ExplainState;
@@ -405,6 +406,11 @@ explain_outNode(StringInfo str, Plan *plan, Plan *outer_plan,
1000.0 * plan->instrument->total / nloops,
plan->instrument->ntuples / nloops,
plan->instrument->nloops);
+ es->printAnalyze = true;
+ }
+ else if( es->printAnalyze )
+ {
+ appendStringInfo(str, " (never executed)");
}
}
appendStringInfo(str, "\n");
--
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