mirror of
https://git.postgresql.org/git/postgresql.git
synced 2026-02-10 06:37:34 +08:00
1c5aec60bb
TO_DATE()
and PgSQL extension FROM_CHAR().
TO_CHAR() routine allow formating text output with a datetime values:
SELECT TO_CHAR('now'::datetime, '"Now is: "HH24:MI:SS');
to_char
----------------
Now is: 21:04:10
FROM_CHAR() routine allow convert text to a datetime:
SELECT FROM_CHAR('September 1999 10:20:30', 'FMMonth YYYY
HH:MI:SS');
from_char
-----------------------------
Wed Sep 01 10:20:30 1999 CEST
TO_DATE() is equal with FROM_CHAR(), but output a Date only:
SELECT TO_DATE('September 1999 10:20:30', 'FMMonth YYYY
HH:MI:SS');
to_date
----------
09-01-1999
In attache is compressed dir for the contrib. All is prepared, but I'am
not
sure if Makefile is good (probably yes).
Comments & suggestions ?
Thomas, thank you for your good advices.
Karel
------------------------------------------------------------------------------
Karel Zak <zakkr@zf.jcu.cz>
http://home.zf.jcu.cz/~zakkr/
26 lines
342 B
Makefile
26 lines
342 B
Makefile
|
|
PROGRAM = rand_datetime
|
|
|
|
OBJECTS = rand_datetime.o
|
|
|
|
CFLAGS = -Wall -fpic -O3
|
|
CC = gcc
|
|
RM = rm -f
|
|
LIBS =
|
|
INCLUDE =
|
|
|
|
COMPILE = $(CC) $(CPPFLAGS) $(CFLAGS) $(INCLUDE)
|
|
LINK = $(CC) $(CFLAGS) -o $@ $(LIBS)
|
|
|
|
|
|
all: $(PROGRAM)
|
|
|
|
$(PROGRAM): $(OBJECTS)
|
|
$(LINK) $(OBJECTS)
|
|
|
|
.c.o: $<
|
|
$(COMPILE) -c $<
|
|
|
|
clean:
|
|
$(RM) -f *~ $(OBJECTS) $(PROGRAM)
|