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Code Issues Releases Wiki Activity

New VAR r_plans added to enable turn ON/OFF 

using right-sided plans.
This commit is contained in:
Vadim B. Mikheev 1997-05-20 10:31:42 +00:00
parent 0f67fb46f6
commit c4ab256383
1 changed files with 37 additions and 1 deletions
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38
src/backend/tcop/variable.c
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@ -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 }
};