結合和語句一個表

Question

代碼的第一部分基於SUM語句創建一個表：

SELECT varday, COUNT(*) AS Vol, 
SUM(FOPS_REHAB) AS FOPS_REHAB, 
SUM(FOPS_RECOVERY) AS FOPS_RECOVERY 
    FROM table 
    WHERE PROCESSING_DATE > '31/aug/2012' and rownumber =1 
GROUP BY varday 
ORDER BY varday 

但是，我有我想以上組合成的編碼其他兩個代碼部分，但他們有一個額外的'where'標準。

因此，這些是我想要結合上面表格的兩個總和表述;

select SUM(Current_Balance_Amount)as rec_bal, varday 
into #temp 
    from table 
    where fops_recovery = 1 and PROCESSING_DATE > '31/aug/2012' and rownumber =1 
group by varday 
ORDER BY varday 


select SUM(Current_Balance_Amount)as reh_bal, varday 
into #temp 
    from table 
    where fops_rehab = 1 and PROCESSING_DATE > '31/aug/2012' and rownumber =1 
group by varday 
ORDER BY varday 

所以reh_bal和rec_bal是在一個表包含FOPS_REHAB和FOPS_RECOVERY第一個表。我有問題，因爲他們有一個額外的條款（where fops recovery = 1 or fops rehab = 1）。

Answer 1

我相信所有3個查詢可以被合併成一個，試試這個：

select varday, 
     COUNT(*) AS Vol, 
     SUM(FOPS_REHAB) AS FOPS_REHAB, 
     SUM(FOPS_RECOVERY) AS FOPS_RECOVERY, 
     SUM(CASE WHEN fops_recovery = 1 THEN Current_Balance_Amount ELSE 0 END) rec_bal, 
     SUM(CASE WHEN fops_rehab = 0 THEN Current_Balance_Amount ELSE 0 END) reh_bal 
where PROCESSING_DATE > '31/aug/2012' and rownumber =1 
group by varday 
ORDER BY varday