Provide drop down list of columns where filters are applied with column's alphabetical label in brackets.
This ties in with recommendations of others where they recommend changing the color of the filter button to easily identify filtered columns. Also consider providing drop down option or pop up option to list column names (with alphabetical label of column, such as (A), (B), etc). This will help to easily identify columns where filters are applied. You don't necessarily want to go to each column, but rather want to catch up with the logic / thought process you were busy with. Maybe some short abbreviated info about the values filtered as well.

2 comments
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Anonymous commented
Only for https://instagram.com/softwaretrain
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Anonymous commented
منم به خاطر استاد بنی اسدی😍😍