查詢與分組

Question

我有一個包含12列如下表：

acct, addr1, addr2, addr3, addr4, addr5, 
addr6, addr7, add8, zip, domicile, shares 

我需要的是捲起總shares成一排的重複行。標準是addr1到addr4是相同的，它確定該行是重複的。

我試過這個，但它沒有工作。

SELECT acct, addr1, addr2, addr3, addr4, addr5, 
addr6, addr7, add8, 
     zip, DOMICILE, sum(shares) as total_shares 
FROM table_name 
GROUP BY addr1, addr2, addr3, addr4 ORDER BY addr1; 

Answer 1

您正在選擇不在您的GROUP BY子句中的列。你必須做一些修改他們，讓他們到結果集，通常有兩種MIN或MAX，如：

SELECT MIN(acct) as acct, na1, na2, na3, na4, MIN(na5) as na5, MIN(na6) as na6, MIN(na7) as na7, MIN(na8) as na8, MIN(zip) as zip, MIN(DOMICILE) as DOMICILE, sum(shares) as total_shares 
FROM table_name 
GROUP BY na1, na2, na3, na4 
ORDER BY na1 

Answer 2

嘗試做一些表gropuping邏輯像交叉或EXCEPT

你如你希望能結合diferent列...

在這個例子中，我會抓住所有的情況下（ADDR1 = ADDR2 ADDR3 = = ADDR4）

SELECT acct, addr1 FROM table_name 
INTERSECT 
SELECT acct, addr2 FROM table_name 
INTERSECT 
SELECT acct, addr3 FROM table_name 
INTERSECT 
SELECT acct, addr4 FROM table_name 

Answer 3

select sum(total_shares) 
from 
(
    SELECT na1, na2, na3, na4, sum(shares) as total_shares 
    FROM table_name 
    GROUP BY na1, na2, na3, na4 
    having count(*) > 1 
) ttl