需要結合兩條select語句的常見結果

Question

我必須從兩個sql語句的結果中選擇常見coloumns c1，c2，c3。

1）

select c1, c2, c3,count(c3) from (select * from form_name 
where data_created >'1273446000' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>1 

2）

select c1, c2, c3,count(c3) from (select * from form_name 
where data_created>'1272236400' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>2 

，我需要選擇C1，C2，C3都相同，常見的查詢兩種結果發現。

這怎麼可能完成......任何人都可以幫忙嗎？

Answer 1

選擇列表中刪除count(c3)，它可以不同（HAVING子句保證本）和OP只想比較C1，C2和C3。如果COUNT(c3)列不同，哪些行可以共用？沒有或有些，它會有所不同。也刪除派生表，它們不是必需的。因此，嘗試：

select 
    c1, c2, c3 
    from form_name 
    where data_created >'1273446000' and data_creazione<'1274569200' 
    group by c1,c2, c3 
    having count(c3)>1 
INTERSECT 
select 
    c1, c2, c3 
    from form_name 
    where data_created>'1272236400' and data_creazione<'1274569200' 
    group by c1,c2, c3 
    having count(c3)>2 

Answer 2

您可以使用派生表，然後將它們連接在一起以獲得所需的結果。

select a.c1, a.c2, a.c3, a.acount, b.bcount 
From 
(select c1, c2, c3, count(*) as acount from (select * from form_name 
where data_created >'1273446000' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>1) a 
join 
(select c1, c2, c3, count(*) as bcount from (select * from form_name 
where data_created>'1272236400' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>2)b 
    on a.c1 = b.c1 and a.c2 = b.c2 and a.c3 = b.c3 

Answer 3

您是否試過用'UNION'加入2個查詢？

例如。

select c1, c2, c3,count(c3) from (select * from form_name 
where data_created >'1273446000' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>1  
union  
select c1, c2, c3,count(c3) from (select * from form_name 
where data_created>'1272236400' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>2 

Answer 4

我認爲INTERSECT將解決您的問題。更多信息here。

select c1, c2, c3,count(c3) from (select * from form_name 
where data_created >'1273446000' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>1  
INTERSECT 
select c1, c2, c3,count(c3) from (select * from form_name 
where data_created>'1272236400' and data_creazione<'1274569200') 
group by c1,c2, c3 having count(c3)>2