There is a difference between columns and custom fields in terms of what you can filter and search by in both your boards and the advanced search.
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Columns
​Columns are a great way to add quick and easy fields for one board. Be warned, however, that columns are not the same as custom fields, and if you create a column it will only apply to one board. 

They will also not appear in any reports you attempt to create in the advanced search.

For example, if you have a card in two boards and are wondering why data will not transfer over, you are probably using two different columns instead of one custom field.
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​Here is how you can add a quick and easy column for one sheet:

Custom Fields
​Custom fields are what you should use across your boards and collections if you want your data to translate over when your cards are in multiple places.

You can create a custom field by doing the following in your sheets:

Or whilst in your cards: 

A custom field can be made available throughout your organization, giving you clear results when it comes to the advanced search.
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​Advanced Search

If you would like to see your custom fields in advanced search, you can do the following: 

If you would like to show and hide columns in your reports, you can do the following:

   4. choose the custom fields you want to show or hide.
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