Mysql 如何从一个表连接两个长查询？

我有专栏

First name | last name | nr (individual number) | pref1 (preference1) | pref2 (preference2)| pref3(preference3) | situation | distance | sex

一个表中有100条记录

从结果来看，我不能裁员。这意味着当我在第一组结果中得到前一个示例“2112”的单个数字（列“nr”）时，它不能显示在最后一个结果中

SELECT DISTINCT nr FROM ap 

第一次查询的记录：

WHERE sex='F' and pref1='1' ORDER BY situation DESC, distance DESC
AND  WHERE (sex='F' and pref2='1' and situation= ' ' ) ORDER BY distance DESC
and WHERE (sex='F' and pref3='1' and situation= ' ' ) ORDER BY distance DESC
LIMIT 4

然后我想加入第二个查询的结果：

WHERE sex='M' and pref1='2' ORDER BY situation DESC, distance DESC
AND WHERE (sex='M' and pref2='2' and situation= ' ' ) ORDER BY distance DESC
AND WHERE (sex='M' and pref3='2' and situation= ' ' ) ORDER BY distance DESC
LIMIT 7

然后连接到上次查询中的所有记录：

WHERE sex='F' and pref1='3' ORDER BY situation DESC, distance DESC
AND WHERE (sex='F' and pref2='3' and situation= ' ' ) ORDER BY distance DESC
AND WHERE (sex='F' and pref3='3' and situation= ' ' ) ORDER BY distance DESC
LIMIT 10

---

有可能吗？

尝试使用，这只是使用UNION的一个简单示例

，因为您演示的SQL无效，不清楚您想要什么。您能展示一些示例表行和查询输出的示例吗？关系演算不能确保这一点，但在MYSQL/ORACLE中，您所说的可能是正确的。这与有效的SQL不同。多个

WHERE

和多个

ORDER BY

每个工会小组？不起作用…它不适用于SQL:（还有其他想法吗？我从昨天就开始尝试了

SELECT DISTINCT nr FROM  
(select distinct nr from ap WHERE sex='F' and pref1='1' ORDER BY situation DESC,   distance DESC Union
select distinct nr from ap WHERE (sex='F' and pref2='1' and situation= ' ' ) ORDER BY distance DESC union
select distinct nr from ap WHERE (sex='F' and pref3='1' and situation= ' ' ) ORDER BY distance DESC union
LIMIT 4)
UNION
(select distinct nr from ap WHERE sex='M' and pref1='2' ORDER BY situation DESC,   distance DESC union
select distinct nr from ap WHERE (sex='M' and pref2='2' and situation= ' ' ) ORDER BY distance DESC union
select distinct nr from ap WHERE (sex='M' and pref3='2' and situation= ' ' ) ORDER BY distance DESC union
LIMIT 7
)
UNION
(select distinct nr from ap WHERE sex='F' and pref1='3' ORDER BY situation DESC,   distance DESC union
select distinct nr from ap WHERE (sex='F' and pref2='3' and situation= ' ' ) ORDER BY distance DESC union
select distinct nr from ap WHERE (sex='F' and pref3='3' and situation= ' ' ) ORDER BY distance DESC union
LIMIT 10
))