Filter function returning a "0" (Zero) when the source cell is blank or null - Microsoft Tech Community
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regex - Google Sheets' filter column with data from another column using custom formula - Stack Overflow
Filter column using conditions returns nothing in large spreadsheets - Google Docs Editors Community
![regex - Google Sheets' filter column with data from another column using custom formula - Stack Overflow regex - Google Sheets' filter column with data from another column using custom formula - Stack Overflow](https://i.stack.imgur.com/mtDpZ.png)
regex - Google Sheets' filter column with data from another column using custom formula - Stack Overflow
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