sql select語句select sum where

Question

我有兩個臨時表（下面），第一個標記是五個條件之一。第二個從該表中拉出並基於該狀況進行總計和計數。我怎麼能得到第二個表格來處理這個或類似的格式？

select ID 
    ,sum_value  
    ,condition_field 
    ,'condition_1' = case when condition_type in (1,2) then 1 else 0 end 
    ,'condition_2' = case when condition_type in (3,4) then 1 else 0 end 
    --etc... 
into #temp  
from my_table 

select ID 
    ,sum_value 
    ,'1_amt' = SUM(sum_value) from #temp where condition_1 = 1 
    ,'1_cnt' = COUNT(ID) from #temp where condition_1 = 1 
    ,'2_amt' = SUM(sum_value) from #temp where condition_2 = 1 
    ,'2_cnt' = COUNT(ID) form #temp where condition_2 = 2 
from #temp 

Answer 1

你想要更多的東西是這樣的：

SUM(CASE WHEN condition_1=1 THEN sum_value ELSE 0 END) AS 1_amt