[英]MS Access 2010 Query Equivalent
這是我使用 MS Access 的第二天,我正在嘗試更新現有應用程序。 這包括更新一些查詢。 我從來不知道它會如此復雜。 Access 中的括號問題真的很令人不安,我碰壁了,出現“語法錯誤”錯誤。 我的 SQL 查詢是這樣的:
Select ….(Something)
Into …. (Some Table)
From A
Inner join B on A.ID=B.ID
LEFT OUTER JOIN STAR as C on C.ID = A.ID
AND C.Data = ’DEMO1’
AND C.POS= ’POS1’
LEFT OUTER JOIN STAR as D on D.ID = A.ID
AND D.Data = ’DEMO2’
AND D.POS= ‘POS2’
LEFT OUTER JOIN STAR as E on E.ID = A.ID
AND E.Data = ’DEMO3’
AND E.POS= ‘POS3’
在訪問中,我正在嘗試的等價物是:
Select ….
Into ….
From (((A
Inner join B on A.ID=B.ID)
LEFT OUTER JOIN STAR as C (on C.ID = A.ID
AND C.Data = ’DEMO1’
AND C.POS= ’POS1’)
LEFT OUTER JOIN STAR as D (on D.ID = A.ID
AND D.Data = ’DEMO2’
AND D.POS= ‘POS2’)
LEFT OUTER JOIN STAR as E on E.ID = A.ID
AND E.Data = ’DEMO3’
AND E.POS= ‘POS3’
考慮
Select ….
Into ….
From
(A Inner join B on A.ID=B.ID) LEFT OUTER JOIN
STAR as C on
C.ID = A.ID AND
((C.Data = ’DEMO1’ AND C.POS= ’POS1’) OR
(C.Data = ’DEMO2’ AND C.POS= ’POS2’) or
(C.Data = ’DEMO3’ AND C.POS= ’POS3’))
終於通過括號找到了我的方式。
Select ….
Into ….
From (((A
Inner join B on A.ID=B.ID)
LEFT OUTER JOIN STAR as C on (C.ID = A.ID
AND C.Data = ’DEMO1’
AND C.POS= ’POS1’))
LEFT OUTER JOIN STAR as D on (D.ID = A.ID
AND D.Data = ’DEMO2’
AND D.POS= ‘POS2’))
LEFT OUTER JOIN STAR as E on (E.ID = A.ID
AND E.Data = ’DEMO3’
AND E.POS= ‘POS3’)
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