MySQL中Stmt预处理提高效率问题的小研究_MySQL:bitsCN.com DELIMITER $$ set @stmt = 'select userid,username from myuser where userid between and '; prepare s1 from @stmt; set @s1 = 2; set @s2 = 100; execute s1 using @s1,@s2; deallocate prepare s1; $$ DELIMITER ; 用这种形式写的查询，可以随意替换参数，给出