One thing you can do that gets part-way there: make a grouped search term (preferences -> searching) that names all the columns you with to search. Name the search term something like "1author". Then after you use ALT-A, change the "author:..." on the search line to "1author:..." and hit return. All the columns you named in the search term definition will be searched.
The plugin is a better solution, but the above might be better than nothing.
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