sql-server-2008 - 将 sum 语句组合到一个表中

Question

代码的第一部分基于 SUM 语句创建一个表：

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，我还有两个其他代码部分要合并到上面的代码中，但它们有一个额外的“位置”标准。

所以这些是我想结合到上表中的两个 sum 语句；

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在一个表中，第一个表包含FOPS_REHAB和FOPS_RECOVERY。我遇到了问题，因为他们有一个额外的子句（where fops recovery = 1 or fops rehab = 1）。

Answer 1

我相信所有 3 个查询都可以合并为一个，试试这个：

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