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Optimizer can now estimate selectivity of IS NULL, IS NOT NULL,

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IS TRUE, etc, with some degree of verisimilitude.  Split out
selectivity support functions from builtins.h into a new header
file selfuncs.h, so as to reduce the number of header files builtins.h
must depend on.  Fix a few missing inclusions exposed thereby.
From Joe Conway, with some kibitzing from Tom Lane.
This commit is contained in:
Tom Lane
2001-06-25 21:11:45 +00:00
parent c31545af27
commit 4d58a7ca87
9 changed files with 439 additions and 68 deletions
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10
src/backend/utils/adt/formatting.c
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@ -1,7 +1,7 @@
/* -----------------------------------------------------------------------
* formatting.c
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/formatting.c,v 1.37 2001/05/03 22:53:07 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/formatting.c,v 1.38 2001/06/25 21:11:44 tgl Exp $
*
*
* Portions Copyright (c) 1999-2000, PostgreSQL Global Development Group
@ -67,21 +67,23 @@
#define DEBUG_elog_output NOTICE
***/
#include <stdio.h>
#include <string.h>
#include "postgres.h"
#include <ctype.h>
#include <sys/time.h>
#include <unistd.h>
#ifdef USE_LOCALE
#include <locale.h>
#endif
#include <math.h>
#include <float.h>
#include "postgres.h"
#include "utils/builtins.h"
#include "utils/date.h"
#include "utils/datetime.h"
#include "utils/formatting.h"
#include "utils/int8.h"
#include "utils/numeric.h"
#include "utils/pg_locale.h"
/* ----------