someone wrote:

Also, for SQL, (A) why are you using nested joins?, and

inner select produce smaller set which is then joined with other
table, kind a optimization

Did you time it?
I've done some "kind of a optimization" that slowed queries by tenfold, because postgres didn't need my advice, and knew better. RDBMS performance is non-intuitive, really. If you're using mysql, YMMV, because its optimizer is not as good.

Yes, my original question was about formatting. It's not original
query (only a part).


Try this:

http://www.dpriver.com/pp/sqlformat.htm


My 2c: I use textwrap.dedent to strip leading spaces from every line.

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