That would seem to lend weight to the hypothesis that there may have been a change in the alias syntax for sqlite3.

I don't have a 10.5 machine at hand for testing, but on my system your alias-free field references appear to resolve the ambiguity in the right direction for the moment.

I'll do a bit of research, and see if I can find out how to write something that is backward-compatible. Technically, you could download and install the latest build of sqlite3, but I don't think it would be a good solution - just in case there are any dependencies within the 10.5 build.