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F_FIRSTDAYLASTWEEKISO
function from adhoc
Entrypoint firstdaylastweekiso compatible with UTF-8
Inputs/Outputs
Input TIMESTAMP date optionally time Output TIMESTAMP date of 1st day of last week (ISO)weekday (Monday) as date with time 00:00:00
Syntax
TestSQL SELECT '27.04.2009' AS ISCORRECT, F_FIRSTDAYLASTWEEKISO('08.05.2009 15:00:00') FROM RDB$DATABASE; SELECT '22.12.2008' AS ISCORRECT, F_FIRSTDAYLASTWEEKISO('02.01.2009 15:00:00') FROM RDB$DATABASE;