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as attache of this mail is patch (to the main tree) with to_char's

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family functions. Contain:

  conversion from a datetype to formatted text:

	to_char( datetime, 	text)
	to_char( timestamp,	text)
	to_char( int4,		text)
	to_char( int8,		text)
	to_char( float4,	text)
	to_char( float8,	text)
	to_char( numeric,	text)

  vice versa:

	to_date		( text, text)
	to_datetime	( text, text)
	to_timestamp	( text, text)
	to_number	( text, text)	   (convert to numeric)


  PostgreSQL to_char is very compatible with Oracle's to_char(), but not
total exactly (now). Small differentions are in number formating. It will
fix in next to_char() version.


! If will this patch aplly to the main tree, must be delete the current
  to_char version in contrib (directory "dateformat" and note in contrib's
  README), this patch not erase it (sorry Bruce).



The patch patching files:

	doc/src/sgml/func.sgml
                     ^^^^^^^^
   Hmm, I'm not sure if my English... :( Check it anyone (volunteer)?

   Thomas, it is right? SGML is not my primary lang  and compile
   the current PG docs tree is very happy job (hard variables setting in
   docs/sgml/Makefile --> HSTYLE= /home/users/t/thomas/....  :-)

   What add any definition to global configure.in and set Makefiles in docs
   tree via ./configure?

	src/backend/utils/adt/Makefile
	src/backend/utils/adt/formatting.c
	src/include/catalog/pg_proc.h
	src/include/utils/formatting.h
Karel Zak <zakkr@zf.jcu.cz>              http://home.zf.jcu.cz/~zakkr/
This commit is contained in:
Bruce Momjian
2000-01-25 23:53:56 +00:00
parent 90aaad06cf
commit b866d2e2d7
15 changed files with 3756 additions and 1877 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/backend/utils/adt/Makefile
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@ -4,7 +4,7 @@
# Makefile for utils/adt
#
# IDENTIFICATION
# $Header: /cvsroot/pgsql/src/backend/utils/adt/Makefile,v 1.32 2000/01/19 02:58:56 petere Exp $
# $Header: /cvsroot/pgsql/src/backend/utils/adt/Makefile,v 1.33 2000/01/25 23:53:51 momjian Exp $
#
#-------------------------------------------------------------------------
@ -31,7 +31,7 @@ OBJS = acl.o arrayfuncs.o arrayutils.o bool.o cash.o char.o chunk.o \
regexp.o regproc.o ruleutils.o selfuncs.o sets.o \
tid.o timestamp.o varchar.o varlena.o version.o \
network.o mac.o inet_net_ntop.o inet_net_pton.o \
ri_triggers.o pg_lzcompress.o pg_locale.o
ri_triggers.o pg_lzcompress.o pg_locale.o formatting.o
all: SUBSYS.o

3157
src/backend/utils/adt/formatting.c Normal file
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26
src/include/catalog/pg_proc.h
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@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_proc.h,v 1.116 2000/01/24 07:16:52 tgl Exp $
* $Id: pg_proc.h,v 1.117 2000/01/25 23:53:52 momjian Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -2343,6 +2343,30 @@ DESCR("larger of two numbers");
DATA(insert OID = 1769 ( numeric_cmp PGUID 11 f t t 2 f 23 "1700 1700" 100 0 0 100 numeric_cmp - ));
DESCR("compare two numbers");
/* formatting */
DATA(insert OID = 1770 ( to_char PGUID 11 f t f 2 f 25 "1184 25" 100 0 0 100 datetime_to_char - ));
DESCR("convert / formatting datetime to text");
DATA(insert OID = 1771 ( to_char PGUID 11 f t f 2 f 25 "1296 25" 100 0 0 100 timestamp_to_char - ));
DESCR("convert / formatting timestamp to text");
DATA(insert OID = 1772 ( to_char PGUID 11 f t f 2 f 25 "1700 25" 100 0 0 100 numeric_to_char - ));
DESCR("convert / formatting numeric to text");
DATA(insert OID = 1773 ( to_char PGUID 11 f t f 2 f 25 "23 25" 100 0 0 100 int4_to_char - ));
DESCR("convert / formatting int4 to text");
DATA(insert OID = 1774 ( to_char PGUID 11 f t f 2 f 25 "20 25" 100 0 0 100 int8_to_char - ));
DESCR("convert / formatting int8 to text");
DATA(insert OID = 1775 ( to_char PGUID 11 f t f 2 f 25 "700 25" 100 0 0 100 float4_to_char - ));
DESCR("convert / formatting float4 to text");
DATA(insert OID = 1776 ( to_char PGUID 11 f t f 2 f 25 "701 25" 100 0 0 100 float8_to_char - ));
DESCR("convert / formatting float8 to text");
DATA(insert OID = 1777 ( to_number PGUID 11 f t f 2 f 1700 "25 25" 100 0 0 100 numeric_to_number - ));
DESCR("convert text to numeric");
DATA(insert OID = 1778 ( to_datetime PGUID 11 f t f 2 f 1184 "25 25" 100 0 0 100 to_datetime - ));
DESCR("convert text to datetime");
DATA(insert OID = 1779 ( to_timestamp PGUID 11 f t f 2 f 1296 "25 25" 100 0 0 100 to_timestamp - ));
DESCR("convert text to datetime");
DATA(insert OID = 1780 ( to_date PGUID 11 f t f 2 f 1082 "25 25" 100 0 0 100 to_date - ));
DESCR("convert text to date");
/*
* prototypes for functions pg_proc.c

31
src/include/utils/formatting.h Normal file
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@ -0,0 +1,31 @@
/* -----------------------------------------------------------------------
* formatting.h
*
* $Id: formatting.h,v 1.1 2000/01/25 23:53:56 momjian Exp $
*
*
* The PostgreSQL routines for a DateTime/int/float/numeric formatting,
* inspire with Oracle TO_CHAR() / TO_DATE() / TO_NUMBER() routines.
*
* 1999 Karel Zak "Zakkr"
*
* -----------------------------------------------------------------------
*/
#ifndef _FORMATTING_H_
#define _FORMATTING_H_
extern text *datetime_to_char(DateTime *dt, text *fmt);
extern text *timestamp_to_char(time_t dt, text *fmt);
extern DateTime *to_datetime(text *date_str, text *fmt);
extern time_t to_timestamp(text *date_str, text *fmt);
extern DateADT to_date(text *date_str, text *fmt);
extern Numeric numeric_to_number(text *value, text *fmt);
extern text *numeric_to_char(Numeric value, text *fmt);
extern text *int4_to_char(int32 value, text *fmt);
extern text *int8_to_char(int64 *value, text *fmt);
extern text *float4_to_char(float32 value, text *fmt);
extern text *float8_to_char(float64 value, text *fmt);
#endif