pears.GetShiftLength

CREATE FUNCTION "pears"."GetShiftLength"( 
  /* Application Maintained Function / Procedure - DO NOT EDIT*/
  IN @TimeFrom TIME,IN @TimeTo TIME,
  IN @BreakMinutes SMALLINT DEFAULT 0 ) 
RETURNS DOUBLE
BEGIN
  DECLARE "ShiftLength" DOUBLE;
  IF @TimeTo > @TimeFrom THEN
    SET "ShiftLength" = (CAST("datediff"("minute",@TimeFrom,@TimeTo) AS DOUBLE)-"isnull"(@BreakMinutes,0))/60.0
  ELSE
    SET "ShiftLength" = (CAST("datediff"("minute",@TimeFrom,'00:00:00') AS DOUBLE)+1440.0+CAST("datediff"("minute",'00:00:00',@TimeTo) AS DOUBLE)-"isnull"(@BreakMinutes,0))/60.0
  END IF;
  RETURN "ShiftLength"
END