From c4ab256383f1201db057a57ed0606795291d1704 Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Tue, 20 May 1997 10:31:42 +0000
Subject: [PATCH] New VAR r_plans added to enable turn ON/OFF using right-sided
plans.
---
src/backend/tcop/variable.c | 38 ++++++++++++++++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)
diff --git a/src/backend/tcop/variable.c b/src/backend/tcop/variable.c
index ae4ab8619d2..3c220dfa686 100644
--- a/src/backend/tcop/variable.c
+++ b/src/backend/tcop/variable.c
@@ -2,7 +2,7 @@
* Routines for handling of 'SET var TO', 'SHOW var' and 'RESET var'
* statements.
*
- * $Id: variable.c,v 1.8 1997/05/16 07:24:13 thomas Exp $
+ * $Id: variable.c,v 1.9 1997/05/20 10:31:42 vadim Exp $
*
*/
@@ -17,6 +17,7 @@
extern Cost _cpu_page_wight_;
extern Cost _cpu_index_page_wight_;
extern bool _use_geqo_;
+extern bool _use_right_sided_plans_;
/*-----------------------------------------------------------------------*/
#if USE_EURODATES
@@ -104,6 +105,40 @@ static bool reset_geqo ()
return TRUE;
}
+static bool parse_r_plans (const char *value)
+{
+
+ if ( strcasecmp (value, "on") == 0 )
+ _use_right_sided_plans_ = true;
+ else if ( strcasecmp (value, "off") == 0 )
+ _use_right_sided_plans_ = false;
+ else
+ elog(WARN, "Bad value for Right-sided Plans (%s)", value);
+
+ return TRUE;
+}
+
+static bool show_r_plans ()
+{
+
+ if ( _use_right_sided_plans_ )
+ elog (NOTICE, "Right-sided Plans are ON");
+ else
+ elog (NOTICE, "Right-sided Plans are OFF");
+ return TRUE;
+}
+
+static bool reset_r_plans ()
+{
+
+#ifdef USE_RIGHT_SIDED_PLANS
+ _use_right_sided_plans_ = true;
+#else
+ _use_right_sided_plans_ = false;
+#endif
+ return TRUE;
+}
+
static bool parse_cost_heap (const char *value)
{
float32 res = float4in ((char*)value);
@@ -250,6 +285,7 @@ struct VariableParsers
{ "cost_index", parse_cost_index,
show_cost_index, reset_cost_index },
{ "geqo", parse_geqo, show_geqo, reset_geqo },
+ { "r_plans", parse_r_plans, show_r_plans, reset_r_plans },
{ NULL, NULL, NULL }
};
--
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