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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 |