pears.AddRecoveryHours

CREATE FUNCTION "pears"."AddRecoveryHours"( 
  /* Application Maintained Function / Procedure - DO NOT EDIT*/
  IN "tfrom" TIME,IN "tto" TIME,IN "hrs" SMALLINT ) 
RETURNS TIME
BEGIN
  DECLARE "rv" TIME;
  IF "isnull"("hrs",0) <= 0 OR "tfrom" IS NULL OR "tto" IS NULL THEN
    RETURN "tto"
  END IF;
  IF "hrs" > 23 THEN
    SET "hrs" = 23
  END IF;
  SET "rv" = "dateadd"("hour","hrs","tto");
  IF "rv" < "tto" AND "rv" >= "tfrom" THEN
    SET "rv" = "dateadd"("minute",-1,"tfrom")
  END IF;
  RETURN "rv"
END