我有一种情况,获取表名应该来自一个设置变量,如:
SET @ID_1 = (SELECT ID FROM `slider` LIMIT 0,1);
SET @Cat = (SELECT Category FROM `slider` LIMIT 0,1);
select * from @Cat where ID = @ID_1
但这样做MySQL输出错误,所以有人可以告诉我如何实现这一点,因为这些是我在MySQL中的宝贝步骤。
答案 0 :(得分:71)
您必须使用prepared statement执行此操作。类似的东西:
SET @s = CONCAT('select * from ', @Cat, ' where ID = ', @ID_1);
PREPARE stmt1 FROM @s;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;
答案 1 :(得分:-2)
I got this solution after hours of debugging
我为mysql安装的图像100%