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我在尝试
select * from table where Contact Is Not null
但它显示的值包括空值
您的查询是正确的,但您的联系人列中的字符串长度可能为零。您可以使用
select * from table where len(Nz(Contact, '')) > 0
如果该列为空,则该Nz函数返回指定的默认值。
Nz
你可以这样尝试:
select * from table where Len([Contact] & "")>0