# Filtering

**URL:** https://community.mp3tag.de/t/filtering/1421
**Category:** General Discussion
**Created:** [November 1, 2004, 3:00am UTC](https://community.mp3tag.de/t/filtering/1421 "2004-11-01T03:00:51Z")
**Posts on this page:** 7
**Page:** 1

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### Author: ![shekel2000](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/3ab097/32.png) [@shekel2000](https://community.mp3tag.de/u/shekel2000)
#### Post date: [November 1, 2004, 3:00am UTC](https://community.mp3tag.de/t/filtering/1421/1 "2004-11-01T03:00:51Z")

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Is there any way of filtering by a field that IS empty?  
Any chance of filtering by a regular expression?

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### Author: ![Sebastian\_Mares](https://community.mp3tag.de/user_avatar/community.mp3tag.de/sebastian_mares/32/9285_2.png) [@Sebastian\_Mares](https://community.mp3tag.de/u/Sebastian_Mares)
#### Post date: [November 1, 2004, 7:28am UTC](https://community.mp3tag.de/t/filtering/1421/2 "2004-11-01T07:28:55Z")

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Hi!

> [@](#):
>
> Is there any way of filtering by a field that IS empty?

I don't think so.

> [@](#):
>
> Any chance of filtering by a regular expression?

That is already possible.

Sebastian

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### Author: ![shekel2000](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/3ab097/32.png) [@shekel2000](https://community.mp3tag.de/u/shekel2000)
#### Post date: [November 1, 2004, 3:14pm UTC](https://community.mp3tag.de/t/filtering/1421/3 "2004-11-01T15:14:25Z")

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> [@](#):
>
> Hi!  
> I don't think so.  
> That is already possible.
> 
> Sebastian
> 
> \<{POST\_SNAPBACK}\>

If the second is possible than of course the first is...  
How can i filter by a regular expression?

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [November 1, 2004, 3:24pm UTC](https://community.mp3tag.de/t/filtering/1421/4 "2004-11-01T15:24:05Z")

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> [@](#):
>
> If the second is possible than of course the first is...  
> How can i filter by a regular expression?
> 
> \<{POST\_SNAPBACK}\>

Just enter the regular expression in the filter field ([F3]). The expression for an empty field would be **^$**

Best regards,  
~ Florian

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### Author: ![shekel2000](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/3ab097/32.png) [@shekel2000](https://community.mp3tag.de/u/shekel2000)
#### Post date: [November 1, 2004, 3:50pm UTC](https://community.mp3tag.de/t/filtering/1421/5 "2004-11-01T15:50:01Z")

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> [@](#):
>
> Just enter the regular expression in the filter field ([F3]). The expression for an empty field would be **^$**
> 
> Best regards,  
> ~ Florian
> 
> \<{POST\_SNAPBACK}\>

Great...! exactly what i was looking for...  
THANKS!

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### Author: ![Henk87](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/h/9dc877/32.png) [@Henk87](https://community.mp3tag.de/u/Henk87)
#### Post date: [July 10, 2006, 10:38am UTC](https://community.mp3tag.de/t/filtering/1421/6 "2006-07-10T10:38:04Z")

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> [@Florian](#):
>
> The expression for an empty field would be **^$**

_A few days after the last post... 😃_

How can you filter fields that **_aren't_** blank?!

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### Author: ![dano](https://community.mp3tag.de/user_avatar/community.mp3tag.de/dano/32/6_2.png) [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [July 10, 2006, 11:27am UTC](https://community.mp3tag.de/t/filtering/1421/7 "2006-07-10T11:27:10Z")

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Just a simple dot **.**