I guess playback statistics fields can't be used as fields for comparation in query expressions. But first I think that I made some mistake because it seems strange that all queries I tried just don't work:
%play_count% IS 1
results in many matches, but
%first_played% EQUAL %last_played%
results in even more matches, and that are matches where %first_played% and %last_played% don't have value (tracks never played) so both equal to zero
%first_played% IS/HAS %last_played%
results with empty match
%first_played% HAS "$year(%last_played%)"
%first_played% HAS "$left(%last_played%,4)"
both are empty matches!
some other empty examples:
"$year(%added%)" EQUAL "$year(%last_modified%)"
"$left(%added%,4)" EQUAL "$left(%last_modified%,4)"
"$left(%added%,4)" IS "$left(%last_modified%,4)"
"$num($left($replace($date(%added%),-,),4),4)" EQUAL "$num($left($replace($date(%last_modified%),-,),4),4)"
I may post other non-sense queries but this is enough I think. So is this by design or I can't see something obvious?
[edit] hm.. Note 3 from Help:
Note that you can't access technical information (such as codec specifications) or component-provided information (playback statistics and such) this way.
This may be speed limiting and also usefulness limiting
But than can be playback statistics field be wrapped with title formatting, like in some of above examples and produce result?