On Sun, Jan 8, 2017 at 12:46 PM, Keith Medcalf <kmedc...@dessus.com> wrote:
> > ... join ... using (column) has nothing whatever to do with foreign keys. > > "FROM a JOIN b USING (c) is "syntactic sugar" ([...]) for the expression > "FROM a, b WHERE a.c = b.c" > Or "FROM a JOIN b ON a.c = b.c". Or "FROM a INNER JOIN b ON a.c = b.c". Syntax does matter (to some?) for readability and comprehension of a query IMHO. I prefer to keep my WHERE clauses for single-table "filtering", and rely on JOIN-ON for how two tables "connect" during a join. (which columns to "thread the needle through" to form/constitute a "multi-table row" is my personal mental image of a join). My $0.02. --DD PS: I myself consider "FROM a, b WHERE a.c = b.c" to be the "legacy" syntax, best avoided :) _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
