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> How to find the last sunday/mon..../sat of any given month.
There is probably a smoother way to do it, but here is a
quick little function to do what you ask. Feed it a date
and a number, where 0 is Sunday, 1 is Monday, etc.
CREATE OR REPLACE FUNCTION lastday(date,int) RETURNS DATE AS '
DECLARE match date; tomorrow date;
BEGIN
SELECT TO_DATE((SELECT EXTRACT(\'year\' FROM $1) || \' \' || EXTRACT(\'month\' FROM $1) || \' 01\'), \'YYYY MM
DD\')INTO tomorrow;
LOOP tomorrow := tomorrow + \'24 hours\'::interval; IF (1 = EXTRACT(\'day\' FROM tomorrow) ) THEN RETURN match; END
IF;IF ($2 = EXTRACT(\'dow\' FROM tomorrow)) THEN match := tomorrow; END IF;
END LOOP;
END;
' LANGUAGE plpgsql;
- --
Greg Sabino Mullane greg@turnstep.com
PGP Key: 0x14964AC8 200402252206
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=AriI
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