MySQL select 将来自相同 table 的多行分组

Question

我正在尝试创建一个查询，以 select 来自同一 table 的多行，将它们像数组一样分组。现在我 select 像这样使用 php 对他们进行操作：

$tks = mysqli_query($con,"SELECT * FROM hof ORDER BY tks DESC LIMIT 5");

$top_ths = mysqli_query($con,"SELECT * FROM hof ORDER BY ths DESC LIMIT 1");

$top_tha = mysqli_query($con,"SELECT * FROM hof ORDER BY tha DESC LIMIT 1");

----

我想将它们合并到一个查询中，这样我就得到了一个关联数组。像这样：

(SELECT * FROM hol ORDER BY tks DESC LIMIT 5) AS tks
UNION
(SELECT * FROM hol ORDER BY ths DESC LIMIT 1) AS top_ths

所以 tks 包含所有 5 行，top_ths 包含 1 行。可能吗？谢谢。

Answer 1

要了解行来自哪个组，请创建附加字段

(SELECT *, 1 as `group` FROM hol ORDER BY tks DESC LIMIT 5)
UNION
(SELECT *, 2 as `group` FROM hol ORDER BY ths DESC LIMIT 1)

MySQL select 将来自相同 table 的多行分组

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