将检查约束添加到存储过程

Question

I'm a noob, I want to add this check contraint to a stored procedure, I don't know if it possible to do this if is possible or a table too

IF EXISTS (
  SELECT 1
  FROM PRESTAMO_SALA PS
  WHERE PS.START_TIME <= @END_TIME 
      AND PS.END_TIME >= @START_TIME 
      AND PS.[DATE] = @DATE
      AND PS.ID_SALA = @ID_SALA 
      )

Thanks

Answer 1

Not sure I understand the question but you can definitely use if exists in a stored procedure.

IF EXISTS (
  SELECT 1
  FROM PRESTAMO_SALA PS
  WHERE PS.START_TIME <= @END_TIME 
      AND PS.END_TIME >= @START_TIME 
      AND PS.[DATE] = @DATE
      AND PS.ID_SALA = @ID_SALA 
      )

--DO SOME STUFF

ELSE
--DO SOMETHING ELSE