mysql 存储过程

CREATE PROCEDURE new111(in tableane VARCHAR(20))
BEGIN
		declare i int default 1;
		myloop:loop
		set @rid = tableane;
		SET @pdd1 = concat('CREATE TABLE ',@rid,' LIKE user', i);
		SET @pdd2 = concat('INSERT INTO  ',@rid,' SELECT * FROM user', i);
		SET @pdd3 = concat('DELETE from user', i);
	
		PREPARE pdd1 FROM @pdd1;   
		EXECUTE pdd1; 
		PREPARE pdd2 FROM @pdd2;   
		EXECUTE pdd2; 
		PREPARE pdd3 FROM @pdd3;   
		EXECUTE pdd3; 
		set i=i+1;
		if i>5
					then
					 leave myloop;
				end if;
			end loop myloop; 
END

　　varchar 类型必须指定长度