1248 - Every derived table must have its own alias

在查询单个表，单个字段时，一般不会用虚拟表。但是我们将多个查询的结果一次显示出来，就可能会遇到。
如：SELECT * FROM XXX 不会用到。
我们查多个表时，查出的结果，需一次显示时，会出现如：
SELECT * FROM (
(SELECT ORG_NO FROM XXXA ORDER BY XXXID DESC LIMIT 1)
(SELECT ORG_NO FROM XXXB ORDER BY XXXID DESC LIMIT 1)
);
在执行时，会报错1248 - Every derived table must have its own alias
遇到这个问题，我是通过添加别名的方式来处理
如下：
SELECT * FROM (
(SELECT ORG_NO FROM XXXA ORDER BY XXXID DESC LIMIT 1) A
(SELECT ORG_NO FROM XXXB ORDER BY XXXID DESC LIMIT 1) B
);

这样会就可以一次显示出所有数据，不用分窗口显示、查看、导出
遇到类似问题的朋友可以试下

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