使用NOT IN时，BETWEEN条件不起作用

Question

SELECT * 
FROM Customer 
INNER JOIN Ledger Entry on [No_] = [Customer No_] 
WHERE No_ NOT IN ([Posting Date] between '2013-10-01' and '2013-10-31')

BETWEEN条件不起作用。

Answer 1

这不是如何not in的作品，你比较No_这似乎是Id客户与Posting Date所以这应该失败。

我想你想这样的事情：

SELECT * 
FROM Customer c 
inner join [Ledger Entry] le on c.[No_] = le.[Customer No_] 
where c.[No_] not in (
         select l.[Customer No_] 
         from [Ledger Entry] l 
         where l.[Posting Date] between '2013-10-01' and '2013-10-31' 
        ) 

但对于这样的查询应该简化为：

SELECT * 
FROM 
Customer c 
inner join [Ledger Entry] le on c.[No_] = le.[Customer No_] 
where le.[Posting Date] < '2013-10-01' or le.[Posting Date] > '2013-10-31' 

不使用not in和between在所有

Answer 2

首先，你的日期应该与另一个日期类型列进行比较。
其次，根据Aaron Bertrand，你应该避免使用BETWEEN进行日期，你可以通过文章了解他是对的。
所以intead，我建议你继续作为;

SELECT * FROM Customer 
inner join LedgerEntry 
on Customer.[No_] = LedgerEntry.[Customer No_] 
where LedgerEntry.[Posting Date] < '2013-10-01' and LedgerEntry.[Posting Date] > '2013-10-31'