wie anzuwenden, wenn und sonst, wenn conditon in mysql Stored Procedure

Question

CREATE DEFINER=`root`@`localhost` PROCEDURE `apply_Leave_SP`(
in leavetypeid int , 
in empid int, 
in reason varchar(100), 
in startdate date, 
in enddate date, 
in startsession int, 
in endsession int, 
in compoffid int, 
in mangerid int 

) 
BEGIN 

declare leavestatus int(10) default 0; 
declare optionalyHolidays int(10) default 0; 
declare listofholidays int(10) default 0; 
declare totalhours int (10) default 0; 
declare hours int (10) default 0; 
declare satsun int (10) default 0; 
declare manger_id int(10) default 0; 
declare paidleave int(10) default 0; 
declare days int(10) default 0; 
declare leaveappliedid int(10) default 0; 
declare lossofpay int(10) default 0; 
declare casualleave int (10) default 0; 
declare sickleave int (10) default 0; 


    select count(holiday_id) into optionalyHolidays from Parabola.holidays where holiday_type_id=2 and 
          DATEDIFF(startdate,curdate())>=20; 

    select count(*) into listofholidays from Parabola.holidays where date between startdate and enddate;      

SELECT 
COUNT(*) AS total into hours 
FROM 
( SELECT ADDDATE(startdate, INTERVAL @i:=@i+1 DAY) AS DAY 
    FROM (
     SELECT a.a 
     FROM (SELECT 0 AS a UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) AS a 
     CROSS JOIN (SELECT 0 AS a UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) AS b 
     CROSS JOIN (SELECT 0 AS a UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL SELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL SELECT 9) AS c 
    ) a 
    JOIN (SELECT @i := -1) r1 
    WHERE 
    @i < DATEDIFF(enddate, startdate) 

) AS dateTable 
WHERE WEEKDAY(dateTable.Day) IN (5,6); 

     SELECT datediff(enddate,startdate) into totalhours; 
     set hours=(totalhours-listofholidays-satsun)*8; 


    if(leavetypeid=1)then 
    set leavestatus=5; 
    else 
     set leavestatus=1; 
     end if;  

     if(optionalyHolidays>=0) then 
     set leavestatus=5; 
     end if; 

insert into leave_applied(leave_type_id,hours,employee_id, 
created_at,updated_at,start_date,end_date,start_date_session, 
end_date_session,reason, 
status,reminder_count,personal_calendar_event_id,system_calendar_event_id) 

values(leavetypeid,hours,empid,curdate(),curdate(),startdate,enddate, 
startsession,endsession, 
reason,leavestatus,1,'sdasdas','sadeew'); 



Select LAST_INSERT_ID() into leaveappliedid ; 


     if((leaveappliedid=1 or 4) and days >paidleave) then 
      set lossofpay=days-paidleave; 


     else if((leaveappliedid=1 or 4) and days> @CL) then 
      set sickleave=days-@CL; 
      set casualleave=@CL; 


     else  if((leaveappliedid=1 or 4) and days>@SL) then 
      set casualleave=days-@SL; 
      set sickleave=@SL; 

      else 
      set mangerid=10; 

      end if; 

     end; 

    insert into leave_actual (leave_applied_id, 
    leave_type_id,hours,start_date, 
    end_date,created_at,updated_at) values(leaveappliedid,leavetypeid, 
    hours,start_date,end_date,curdate(),curdate());  


insert into leave_approval (leave_applied_id, 
     manager_id,status ,created_at,updated_at) values 
     (leaveappliedid,mangerid,leavestatus,curdate(),curdate()); 

    END 

dies mein Code, wenn ich versuche, anders anzuwenden, wenn die Bedingung, dann gibt es Syntaxfehler kommt, während bei nur, wenn kein Fehler es kommt, aber ich muss gelten else if Bedingung mir bitte empfehlen, wo es sonst

wenn Bedingung tue falsch zeigen

Answer 1

Die Syntax if, else, wenn so:

IF condition THEN 
    ... ... 
ELSEIF condition THEN 
    ... ... 
END IF; 

Siehe manual hier.

IF search_condition THEN statement_list 
    [ELSEIF search_condition THEN statement_list] ... 
    [ELSE statement_list] 
END IF