SQL Sorting in'Union All'條件

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我有4個select表，Union All作爲connect0r與這些表。SQL Sorting in'Union All'條件

Select [] from [a] inner join [b] on a.[] = b.[] 
where [] 

Union All 

Select [] from [a] inner join [b] on a.[] = b.[] 
where [] 

Union All 

Select [] from [a] inner join [b] on a.[] = b.[] 
where [] 

Union All 

Select [] from [a] inner join [b] on a.[] = b.[] 
where []

我已經試圖讓order by [a] asc在最後一行在每個select線，但它仍然沒有工作，成了錯誤。

來源

2013-07-12 anakpanti

你能告訴我們完整的sql嗎？符號'[]'和'[a]'對我來說沒有意義。 – Parado

[a]是表名？你不應該試圖通過表名 – JsonStatham

在第一select你必須有列別名爲A

Select col1 as a [...] from [a] inner join [b] on a.[] = b.[] where []  
Union All 
Select [] from [a] inner join [b] on a.[] = b.[] where []  
Union All  
Select [] from [a] inner join [b] on a.[] = b.[] where []  
Union All  
Select [] from [a] inner join [b] on a.[] = b.[] where [] 
order by a

來源

2013-07-12 07:42:56 Parado

來訂購每個「where」不同的條件。所以，如果我喜歡@parado寫，它只是最後一個「選擇」，排序很好。 – anakpanti

@anakpanti您按列排序不是條件 – Parado

@anakpanti - 您只爲'UNION [ALL]'查詢應用一個ORDER BY'，它適用於* entire *結果集，而不僅僅是「最後選擇」 –

你只需把你的ORDER BY子句在聲明的最後，引用先選擇列名/別名。

例如，

SELECT a,b customName 
FROM T1 
WHERE a = 'yourFilter' 
UNION ALL 
SELECT foo1,foo2 
FROM T2 
WHERE foo2 IN ('otherFilter','otherFilter2') 
ORDER BY customName DESC, a

來源

2013-07-12 07:44:57 LittleSweetSeas

SQL Sorting in'Union All'條件

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