如何從一個表中連接兩個長查詢？

Question

我列

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

與100只記錄在一個表中AP

在所有我不能有冗餘的結果。這意味着當第一組結果中我得到前面的例子'2112'的個體編號（列「nr」）時，它不能顯示在最後一個結果中。從第一個查詢

SELECT DISTINCT nr FROM ap 

記錄：

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 

然後我想加盟，從第二個查詢結果：

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 

，然後加入從上次查詢的所有記錄：

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 

是否有可能t做什麼？

Answer 1

嘗試使用UNION，它是使用UNION

Answer 2

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 
))