Quote:
Originally Posted by chaley
My post #7 above has two workarounds for this problem. The first makes it easier to find empty values in a 2-state boolean (yes/no) column by creating a 3-state composite column. The second creates a composite column with only 2 states, combining empty and No, that you can use in CC's grouping drawer instead of the original boolean column.
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Thanks that is a workable workaround but I prefer not to use composite columns because of the performance penalty. If I am unable to get any other workaround I will go with it. I checked with the author of smart eject plugin he says if I can search for it in calibre I can use it in smart eject. But #read:false includes the books that show up as empty in calibre companion so that is a sadly a bust as well.