Question

我有一个像下面这样的表，每年有一个空值。我需要在Access查询中计算每个Id的连续最大计数。我在VBA方面不擅长，所以试图在Access查询中完成它。

ID  2001    2002    2004    2005    2006    2007
101   1     1           1   1
102   1     1           1   1        1
103   1                 
104   1     1               1       1        1
105   1     1          1    1       1        1
106   1     1          1

Answer 1

可能，但不确定“最大数量”可能意味着什么：

Select 
    ID, 
    Nz([2001],0)+Nz([2002],0)+Nz([2003],0)+Nz([2004],0)+Nz([2005],0)+Nz([2006],0)+Nz([2007],0) As YearCount
From
    YourTable

连续三年：

Select 
    ID, 
    ([2001]+[2002]+[2003] Is Not Null) Or
    ([2002]+[2003]+[2004] Is Not Null) Or
    ([2003]+[2004]+[2005] Is Not Null) Or
    ([2004]+[2005]+[2006] Is Not Null) Or
    ([2005]+[2006]+[2007] Is Not Null) As Count3
From
    YourTable

和/或：

Select 
    ID, 
    ([2001]+[2002]+[2003] Is Not Null) As [2001-2003],
    ([2002]+[2003]+[2004] Is Not Null) As [2002-2004],
    ([2003]+[2004]+[2005] Is Not Null) As [2003-2005],
    ([2004]+[2005]+[2006] Is Not Null) As [2004-2006],
    ([2005]+[2006]+[2007] Is Not Null) As [2005-2007]
From
    YourTable

计算Access查询中每个Id的连续最大计数

1 个答案: