mysql存儲過程 if else

mySQL存儲過程if else

DROP PROCEDURE IF EXISTS text;  
  
create procedure text(  
out rtn int   
)  
begin  
  
    declare LoginId INT default 0;  
  
    set rtn=1;    
  
    IF LoginId = 3  
    THEN  
        set rtn=2;  
    ELSEIF LoginId = 0  
    THEN  
        set rtn=3;  
    ELSE  
        set rtn=4;  
    END IF;  
  
end