mysql - 如何从mysql中不同状态的同一张表中选择数据？

Question

我有一张这样的桌子。

我想选择随机的 10 个非花式suite_number 和随机的 10 个花式suite_number。现在我使用两个查询来做到这一点。我可以用一个查询来完成吗？如何从mysql中不同状态的同一张表中选择数据？

Answer 1

这个怎么样：

( SELECT suite_number 
    FROM tbl_name
   WHERE is_fancy = 0
ORDER BY RAND()
   LIMIT 10
) UNION ALL
( SELECT suite_number 
    FROM tbl_name
   WHERE is_fancy = 1
ORDER BY RAND()
   LIMIT 10)
ORDER BY RAND()

最后一行ORDER BY RAND()是可选的。

Answer 2

SELECT suite_number
FROM my_table
WHERE is_fancy = '1'
ORDER BY RAND()
LIMIT 10
UNION
SELECT suite_number
FROM my_table
WHERE is_fancy = '0'
ORDER BY RAND()
LIMIT 10