Excel

[demoniak61]

Hello,
I don't know if this question has already been addressed.

Is it (or would it be) possible to search in an Excel file?

[NotNull]

Yes, that is possible. Provided that the right software to read these files is installed.
Basically: If Excel is installed, Everything can read the content of these files.

[void]

To search file content, please try the content: search function.

For example, to search for the content "abc 123" in xlsx files, modified this year, search for:
ext:xlsx dm:thisyear content:"abc 123"

Note: File content is not indexed. Searching file content will be very slow.
For the best performance, combine the content: search with other search filters.

Please try the Advanced Search under the search menu and set the "A word or phrase in the file" field.
For the best performance, set as many fields in the Advanced Search as possible.

[demoniak61]

Thank you for your answers. Using your search method, the software does indeed return xslx files with this content, but isn't it possible to display the lines contained in this file?
For example, I'm looking for the contents "abc123", and I'd like the excel boxes with this content (the whole text) to appear in the search result.

[void]

Everything will only list the file that contains the text.

You will need to open the file in Excel to find the matching line.

Showing the matching line in Everything in the preview pane is on my TODO list.