資料庫中多條不同資料的統計時組織成一張表

今天在做資料庫的儲存過程的時候碰到了乙個問題，我想對資料庫中多天不同類別的資料量分別進行統計後一起傳出來，剛開始我寫的是以下sql語句：

select count(*) as waitwork from

suds_work_submit where file_mark=0 and staff_id=(select userid from accounts_users where username=@staffname)

select count(*) as finishedwork from

suds_work_submit where file_mark=3 and staff_id=(select userid from accounts_users where username=@staffname)

select count(*) as waitcheck from

suds_work_submit where file_mark=1 and staff_id=(select userid from accounts_users where username=@staffname)

select count(*) as backwork from

suds_work_submit where file_mark=2 and staff_id=(select userid from accounts_users where username=@staffname)

end這段**在執行時並沒有錯誤，但資料傳出去的時候並不是以一張表的形式傳出去的，而是以多張表的形式，這樣就會造成無法將這些統計的多個資料量轉換成datatable表，從而會導致列名在資料表中無效，解決辦法將這幾個統計資料量組織成一張表的形式傳出來。改進後的sql語句如下：

select (select count(*) as waitwork from

suds_work_submit where file_mark=0 and staff_id=(select userid from accounts_users where username=@staffname)) as waitwork,

(select count(*) as finishedwork from

suds_work_submit where file_mark=3 and staff_id=(select userid from accounts_users where username=@staffname)) as finishedwork,

(select count(*) as waitcheck from

suds_work_submit where file_mark=1 and staff_id=(select userid from accounts_users where username=@staffname)) as waitcheck,

(select count(*) as backwork from

suds_work_submit where file_mark=2 and staff_id=(select userid from accounts_users where username=@staffname)) as backwork

end