按自定义列过滤 SQL

Question

我想知道是否可以根据查询中的“样式”列轻松过滤结果。

select distinct
  m.ManagerName, 
  p.ProductName, 
  p.slocumrank,
  case 
    when s2.SubType2ID = 45 then 'Large Cap' 
    else s2.SubType2Name 
  End + ' ' + s1.SubType1Name as 'Style'
from QuantPerformance qp
where Style = 'ABCD'

目前，我的 where 语句过滤掉了所有内容。

Answer 1

SELECT * FROM 
(
SELECT DISTINCT  ManagerName
               , ProductName
               , slocumrank
               , case when SubType2ID = 45 
                      then 'Large Cap' 
                      else  SubType2Name 
                 End + ' ' + SubType1Name  AS  [Style]
from QuantPerformance
 ) A
where A.Style = 'ABCD'

或者

SELECT DISTINCT  ManagerName
               , ProductName
               , slocumrank
               , case when SubType2ID = 45 
                      then 'Large Cap' 
                      else  SubType2Name 
                 End + ' ' + SubType1Name  AS  [Style]
from QuantPerformance
where case when SubType2ID = 45 
           then 'Large Cap' 
           else  SubType2Name 
      End + ' ' + SubType1Name = 'ABCD'