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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/
18 lines
416 B
C
18 lines
416 B
C
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#ifndef TO_FROM_CHAR_H
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#define TO_FROM_CHAR_H
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/*------
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* For postgres
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*------
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*/
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extern text *to_char(DateTime *dt, text *format);
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extern DateTime *from_char(text *date_str, text *format);
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extern DateADT to_date(text *date_str, text *format);
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extern text *ordinal(int4 num, text *type);
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extern char *months_full[]; /* full months name */
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extern char *rm_months[]; /* roman numeral of months */
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#endif |