Stored procedure in mysql

[Kunal Lakhani]

I am a beginner in mysql stored procedure

What is wrong with this mysql stored procedure?

DELIMITER //
CREATE PROCEDURE getPolicies()
BEGIN
DECLARE a INT;
DECLARE b INT;
SET b = 1001;
SET a = SELECT ID FROM MEMPLACEMENT WHERE INTRODUCER = b 
AND PLACEMENT = 'Left' AND REGISTRATIONDATE = (SELECT MAX(REGISTRATIONDATE)
 FROM MEMPLACEMENT WHERE 
INTRODUCER = b
AND PLACEMENT = 'Left');
END //
DELIMITER ;

Mysql console gives me following error

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'SELEC
T POLICYNUMBER FROM MEMBERPLACEMENT WHERE INTRODUCERPOLICYNUMBER = b AND PL'