Just be aware that VFP's SQL lets you get away with that, but not all incarnations of SQL will.
Eric On Tue, Apr 2, 2019 at 5:22 PM Charlie-gm <[email protected]> wrote: > > My experience has shown either syntax (WHERE vs INNER JOIN) to provide > the same result without noticeable performance difference. > > I think the INNER JOIN syntax was added later in the SQL standards. > > If you solely use JOIN statements, one could argue the readability is > better (aka more explicit). Other than that, perhaps a particular DBMS > would "optimize better" with INNER JOIN or WHERE - but I kind of doubt it. > > -Charlie > > > On 4/2/2019 6:05 PM, Garrett Fitzgerald wrote: > > Hey, all. I had a general SQL question. Often, I find myself needing to > use > > the syntax: > > > > FROM a > > LEFT JOIN b ON a.key = b.key AND b.field = 'Value' > > > > because if I filter b.field in the WHERE clause, I've effectively made > the > > LEFT JOIN an inner one. > > > > That makes me wonder, at what point do we stop moving conditions to the > > JOIN clause? Obviously, some can't move for syntactical reasons, such as > > subqueries. But short of that, when does it make sense to limit a > non-outer > > join in the join criteria? Never? > > > > > > --- StripMime Report -- processed MIME parts --- > > multipart/alternative > > text/plain (text body -- kept) > > text/html > > --- > > [excessive quoting removed by server] _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/CAAwxvUmMjkgKO2f-ESfQ2L37muthi7pnTqc9bYvCt3k_i=y...@mail.gmail.com ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
