如何从表中获取特定值并将其存储在存储过程中的变量中

Question

iam trying to store value from database into a variable inside procedure and increment its value by 1. This is what i do:

CREATE DEFINER=`satish`@`%` PROCEDURE `p_authTeacher`(
IN username VARCHAR(35),
IN pwd VARCHAR(35),
OUT msg INT,  
OUT msg1 INT,
OUT msg2 INT
)
BEGIN
select (COUNT(*) > 0) INTO @result from login where User_Name = username and    User_Password = md5(pwd);

SET msg = @result;  
IF @result = 1 THEN
select (COUNT(*)>0) into @result1 from login where User_Name = username and User_Password = md5(pwd) and Is_New ='F';
if @result1= 1 Then
UPDATE login SET Last_login=now() where User_Name = username and User_Password = md5(pwd);
SET msg1 = @result1;
END IF;
if @result1= 0 Then
UPDATE login SET Last_login=now() where User_Name = username and User_Password = md5(pwd);
SET msg1 = @result1;    
END IF;
END IF; 
IF @result = 0 THEN
    select Password_Attempts into @attempts from login where User_Name = username ;
    SET msg2 = @attempts;
update login set Password_Attempts=1 where username = uname;
END IF;
END

trying to store value of column(Password_Attempts) where username = uname of login table. add 1 into it and update into database. But certainly i got Syntax error. Please help me on this. the last if block is not working even if the Username and password doesn't match.

Answer 1

Refer to this link for a correct syntax of SELECT ... INTO . You should put INTO before FROM :

select Password_Attempts into @attempts from login where User_Name = uname ;