SQL CASE和JOINS：如何獲得不同的計數和總計？

我需要一些幫助。我希望對我的系統中用於這些列的用戶進行計數，並對其進行激活，停用和計數。當前輸出包含NAME列中兩次輸出的名稱，如下所示，其中包含NULLS。我想消除NULL，並獲得每列的小計。希望我能得到一些幫助。SQL CASE和JOINS：如何獲得不同的計數和總計？

Current output: 
- NAME Activated Deactivated 
- MAX  25   NULL 
- MAX  NULL   5 
- TAX  40   NULL 
- TAX  NULL   10 

    Desired output: 
    - NAME Activated Deactivated 
    - MAX  25   5 
    - TAX  40   10 
    -Total 65   15

謝謝。

select 
    case 
     when (upper(m.email) like '%max.com') then 'MAX' 
     when (upper(m.email) like '%tax.com') then 'TAX' 
     else 'OTHER' 
     end Name, count(*) 'Activated', null 'Deactivated' 
from 
    membership.user_details d 
    inner join membership.aspnet_membership m 
     on m.userid = d.userid 
    inner join membership.user_notes n 
     on n.userid = d.userid 
     and n.created_on = (
      select 
       min(created_on) 
      from 
       membership.user_notes 
      where 
       userid = n.userid 
       and note = 'received.' 
     ) 
     and substring(convert(varchar(8),n.created_on,112),1,6) = '201209' 
where 
    approved = 1 
group by  
    case 
     when (upper(m.email) like '%max.com') then 'MAX' 
     when (upper(m.email) like '%tax.com') then 'TAX' 
     else 'OTHER' 
     end  

union 

select 
    case 
     when (upper(m.email) like '%max.com') then 'MAX' 
     when (upper(m.email) like '%tax.com') then 'TAX' 
     else 'OTHER' 
     end Name, 
    null 'Activated', 
    count(*) 'Deactivated' 
from 
    membership.user_details d 
    inner join membership.aspnet_membership m 
     on m.userid = d.userid 
    inner join membership.user_notes n 
     on n.userid = d.userid 
     and n.CREATED_ON = (
      select 
       min(created_on) 
      from 
       membership.user_notes 
      where 
       userid = n.userid 
       and note = 'SAAR received.' 
     ) 
     and substring(convert(varchar(8),m.LastLockoutDate,112),1,6) = '201209' 
where 
    approved = 1 
group by  
    case 
     when (upper(m.email) like '%max.com') then 'MAX' 
     when (upper(m.email) like '%tax.com') then 'TAX' 
     else 'OTHER' 
     end

來源

2013-03-13 user1880670

哪些表結構？ – Melanie 2013-03-13 15:53:08

這個sql腳本從各種表中獲取信息。確切地說3張桌子。桌上用於獲取案件的電子郵件，下一個用於查看用戶是否曾經被批准過，而另一個用於用戶第一次進入系統（已授權）。 – user1880670 2013-03-13 15:57:49

你應該能夠整合到這個單一SELECT：

select 
    case 
     when (upper(m.email) like '%max.com') then 'MAX' 
     when (upper(m.email) like '%tax.com') then 'TAX' 
     else 'OTHER' 
    end Name, 
    SUM(case when substring(convert(varchar(8),n.created_on,112),1,6) = '201209' then 1 else 0 end) 'Activated', 
    SUM(case when substring(convert(varchar(8),m.LastLockoutDate,112),1,6) = '201209' then 1 else 0 end) 'Deactivated' 
from membership.user_details d 
inner join membership.aspnet_membership m 
    on m.userid = d.userid 
inner join membership.user_notes n 
    on n.userid = d.userid 
    and n.CREATED_ON = (select min(created_on) 
         from membership.user_notes 
         where userid = n.userid 
          and note = 'SAAR received.') 
where approved = 1 
group by case when (upper(m.email) like '%max.com') then 'MAX' 
      when (upper(m.email) like '%tax.com') then 'TAX' 
      else 'OTHER' end

新版本使用的骨料用CASE表達式得到總數Activated和Deactivated。 CASE 檢查您每個查詢使用的日期。

然後，如果你想包括總行，您可以使用GROUP BY with ROLLUP

來源

2013-03-13 15:55:00 Taryn

這樣做。我要用ROLLUP在Group BY上做一些作業，因爲我還想添加一個總ROM。我以前從未使用過該功能。感謝您的幫助！ – user1880670 2013-03-13 16:40:16

@ user1880670樂於幫忙！ :)如果您對「通過彙總」進行分組時遇到任何問題，請發佈新問題。 – Taryn 2013-03-13 16:40:53

變化null 'Deactivated'分別null 'Activated'到0'Deactivated'和0'Activated'，然後做一個GROUP BY Name WITH ROLLUP

來源

2013-03-13 15:53:41

SQL CASE和JOINS：如何獲得不同的計數和總計？

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