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F_LASTDAYWEEK

function from adhoc

Entrypoint lastdayweek compatible with UTF-8

Inputs/Outputs

   Input      TIMESTAMP     date optionally time 
   Output     TIMESTAMP     Date with last day of (US)weekday (Saturday) as date with time 00:00:00

Syntax

   TestSQL
   SELECT '27.12.2008' AS ISCORRECT, F_LASTDAYWEEK('26.12.2008 15:00:00') FROM RDB$DATABASE;
   SELECT NULL AS ISCORRECT, F_LASTDAYWEEK(NULL) FROM RDB$DATABASE;