# Nickname comapre New Users' and alredy saved nicknames in Airtable DB

**URL:** <https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460>\
**Category:** Questions about Thunkable X\
**Tags:** beginner\
**Created:** [August 21, 2022, 3:53pm UTC](https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460 "2022-08-21T15:53:07Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jumalcom222](https://avatars.discourse-cdn.com/v4/letter/j/df788c/32.png) [@jumalcom222](https://community.thunkable.com/u/jumalcom222)\
**Post date:** [August 21, 2022, 3:53pm UTC](https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460/1 "2022-08-21T15:53:07Z")

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How do I create the function to see if there is something like the Nickname of New User(in Text field) and others have already saved in Airtable DB?

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**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\
**Post date:** [August 21, 2022, 3:54pm UTC](https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460/2 "2022-08-21T15:54:22Z")

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You can loop through the rows of an Airtable column and compare values or you can use the Airtable API to _filterbyformula_. It’s complicated but very powerful.

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**Author:** ![jumalcom222](https://avatars.discourse-cdn.com/v4/letter/j/df788c/32.png) [@jumalcom222](https://community.thunkable.com/u/jumalcom222)\
**Post date:** [August 23, 2022, 4:07am UTC](https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460/3 "2022-08-23T04:07:55Z")

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I want to know/see code block

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**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\
**Post date:** [August 23, 2022, 5:39am UTC](https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460/4 "2022-08-23T05:39:14Z")

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Does the link I shared here help?

> [@I want to search in DataSources and get the column ID](https://community.thunkable.com/t/i-want-to-search-in-datasources-and-get-the-column-id/1766281/6):
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> Here’s a demo of how to do this: [https://x.thunkable.com/copy/c05336660d538ffec6e818808a64ed92](https://x.thunkable.com/copy/c05336660d538ffec6e818808a64ed92) (See the screen with your username.) You should never have a join block connected as a row id. Row IDs are either integers or they are long text strings like “H@#7d9E0&n3kL2!m”. You either use a whole number or you look up the ID itself using the list of values block:

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**Author:** ![system](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/0/f/0f59f292712368bce16ff80133ae10de8a6f27e8.png) [@system](https://community.thunkable.com/u/system)\
**Post date:** [November 21, 2022, 5:40am UTC](https://community.thunkable.com/t/nickname-comapre-new-users-and-alredy-saved-nicknames-in-airtable-db/2008460/5 "2022-11-21T05:40:13Z")

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