表格细胞不是空的? [英] Table cells not empty?

查看:83
本文介绍了表格细胞不是空的?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述




我有一个可以拥有空字段的表,然后我有一个查询只显示表中的行,当该特定字段为空时(critweria ="" ;(也试过= Null))。


好​​的!它工作正常,直到该字段获得一个值(显然),但当我再次清空该字段时,它不再出现在查询中。


任何想法?使用XP和Access 2007试用版


提前谢谢

Hi

I have a table wich can posses empty fields, then I have a query that only show rows from the table when that specific field is blank (critweria ="" (also tried =Null)).

Ok! It works fine, untill the field gets a value (obviously) but when I empty the field again it dosen''t reappear in the query.

Any ideas? Using XP with Access 2007 Trial

Thanks in advance

推荐答案

您的查询的SQL是什么?

我怀疑你可能正在检查一个空字符串然后,当你清除它时,将它设置为空。

"" = / = Null。

如果您发布SQL,我们可以建议使其更可靠地工作的方法。
What is the SQL of your query?
I suspect you may be checking for an empty string then, when you clear it, setting it to Null.
"" =/= Null.
If you post your SQL we can suggest ways to make it work more reliably.


展开 | 选择 | Wrap | 行号


对不起,当我在帖子上写帖子时,表格显示正常。出了什么问题?
Sorry about that, the table showed up fine when I was writing the post the post. What did go wrong?


这篇关于表格细胞不是空的?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆