两个选择多列语句

Question

我试图弄清楚如何将这两个SQL语句合并为一个。我希望最终结果在一个查询中...如果可能的话。

SELECT  WHM_ilvl AS BestWHM_ilvl, username AS BestWHM_Name FROM roster ORDER BY WHM_ilvl DESC
SELECT  BLM_ilvl AS BestBLM_ilvl, username AS BestBLM_Name FROM roster ORDER BY BLM_ilvl DESC

结果如下：

BestWHM_ilvl | BestWHM_ilvl | BestBLM_ilvl | BestBLM_ilvl
107          | User1        | 121          | user2
102          | User11       | 109          | user3
80           | User3        | 101          | user52
79           | User7        | 99           | user3
78           | User4        | 80           | user1

我尝试用（）将它们分开并将它们包括在内，好像它们是单列但它不起作用。我尝试寻找我想要的相同类型的查询但从未找到任何东西。

如果可以的话，我不介意提到正确的知识。

我在PHP和MySQL中使用它。

的问候，

Answer 1

SELECT
  r1.WHM_ilvl AS BestWHM_ilvl
, r1.username AS BestWHM_Name
, r2.BLM_ilvl AS BestBLM_ilvl
, r2.username AS BestBLM_Name
FROM roster r1
  JOIN roster r2 ON r1.id = r2.id
ORDER BY r1.WHM_ilvl, r2.BLM_ilvl
DESC

这是查询问题的最简单形式的查询。似乎可能还有更多，如果这样更新，我会尝试回到这个。

编辑糟糕。纠正了我之前应该抓住的一些事情。