From e2a0fc5363e293d29053d0582a1009bc9fef0276 Mon Sep 17 00:00:00 2001
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Tue, 4 Mar 2014 15:31:18 -0300
Subject: [PATCH] auto_explain: Add logging of trigger execution
Author: Kyotaro HORIGUCHI
Reviewed-by: Jaime Casanova
---
contrib/auto_explain/auto_explain.c | 14 ++++++++++++++
doc/src/sgml/auto-explain.sgml | 18 ++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/contrib/auto_explain/auto_explain.c b/contrib/auto_explain/auto_explain.c
index af684794a22..c8ca7c4a340 100644
--- a/contrib/auto_explain/auto_explain.c
+++ b/contrib/auto_explain/auto_explain.c
@@ -25,6 +25,7 @@ static int auto_explain_log_min_duration = -1; /* msec or -1 */
static bool auto_explain_log_analyze = false;
static bool auto_explain_log_verbose = false;
static bool auto_explain_log_buffers = false;
+static bool auto_explain_log_triggers = false;
static bool auto_explain_log_timing = false;
static int auto_explain_log_format = EXPLAIN_FORMAT_TEXT;
static bool auto_explain_log_nested_statements = false;
@@ -113,6 +114,17 @@ _PG_init(void)
NULL,
NULL);
+ DefineCustomBoolVariable("auto_explain.log_triggers",
+ "Include trigger statistics in plans.",
+ "This has no effect unless log_analyze is also set.",
+ &auto_explain_log_triggers,
+ false,
+ PGC_SUSET,
+ 0,
+ NULL,
+ NULL,
+ NULL);
+
DefineCustomEnumVariable("auto_explain.log_format",
"EXPLAIN format to be used for plan logging.",
NULL,
@@ -295,6 +307,8 @@ explain_ExecutorEnd(QueryDesc *queryDesc)
ExplainBeginOutput(&es);
ExplainQueryText(&es, queryDesc);
ExplainPrintPlan(&es, queryDesc);
+ if (es.analyze && auto_explain_log_triggers)
+ ExplainPrintTriggers(&es, queryDesc);
ExplainEndOutput(&es);
/* Remove last line break */
diff --git a/doc/src/sgml/auto-explain.sgml b/doc/src/sgml/auto-explain.sgml
index c9b81923b72..1037f1f2e22 100644
--- a/doc/src/sgml/auto-explain.sgml
+++ b/doc/src/sgml/auto-explain.sgml
@@ -122,6 +122,24 @@ LOAD 'auto_explain';
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <varname>auto_explain.log_triggers</varname> (<type>boolean</type>)
+ </term>
+ <indexterm>
+ <primary><varname>auto_explain.log_triggers</> configuration parameter</primary>
+ </indexterm>
+ <listitem>
+ <para>
+ <varname>auto_explain.log_triggers</varname> causes trigger
+ execution statistics to be included when an execution plan is logged.
+ This parameter is off by default. Only superusers can change this
+ setting. This parameter has no effect unless
+ <varname>auto_explain.log_analyze</> parameter is set.
+ </para>
+ </listitem>
+ </varlistentry>
+
<varlistentry>
<term>
<varname>auto_explain.log_format</varname> (<type>enum</type>)
--
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