"Black, Michael (IS)" <[email protected]>
writes:

> Why do you have a subselect....what are you doing there that you can't
> do in the "on" clause?

In the "real" example I'm joining with a view:
  create view v as select * from b where ...
  select * from a left natural join v where id = 1;

IIUC, when I execute the query on the second line, SQLite replaces the
use of "v" with v's definition, "select * from b where ...", so as far
as the query planner is concerned there is a subquery. The only way to
avoid the subquery is not to use the view.

Nick

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