SQL Server查詢，以獲得表改變的結果

Question

我有一個表，如下

ClientID  AccountNumber BalanceOnDay0  BalanceOnDay1 BalanceOnDay2  BalanceOnDay3  BalanceOnDay4  BalanceOnDay5  BalanceOnDay6  BalanceOnDay7 
ABC1   123    10     NULL   NULL    NULL    NULL    NULL    NULL    NULL  
ABC1   123    NULL    NULL   NULL    NULL    NULL    NULL    NULL    3  

我想看到的結果作爲beblow。

ClientID  AccountNumber BalanceOnDay0  BalanceOnDay1 BalanceOnDay2  BalanceOnDay3  BalanceOnDay4  BalanceOnDay5  BalanceOnDay6  BalanceOnDay7 
ABC1   123    10     NULL   NULL    NULL    NULL    NULL    NULL    3 

請建議！

Answer 1

您可以使用SUM()如果要平衡值結合起來，如果你有多個記錄：

select clientid, 
    accountnumber, 
    sum(BalanceOnDay0) BalanceOnDay0, 
    sum(BalanceOnDay1) BalanceOnDay1, 
    sum(BalanceOnDay2) BalanceOnDay2, 
    sum(BalanceOnDay3) BalanceOnDay3, 
    sum(BalanceOnDay4) BalanceOnDay4, 
    sum(BalanceOnDay5) BalanceOnDay5, 
    sum(BalanceOnDay6) BalanceOnDay6, 
    sum(BalanceOnDay7) BalanceOnDay7 
from table1 
group by clientid, accountnumber 

見SQL Fiddle with Demo