RE: Left join question (was: SQL table joins: Join vs. Where)

["Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>]

> From: Dan Bale
> 
> BTW, this exercise demonstrates the beauty of SQL.  Even though I'm
not
> proficient in it yet, I was able to take a working *QRYDFN, convert it
to
> SQL and get the same results (the caveat being the "Match Type = 1" is
the
> only join that will convert properly), tweak it do explicit joining,
> testing it along the way in interactive SQL and in Ops Nav.

You're right, Dan, this is a really cool example of SQL doing what it
does best.  The fact that you have to sort and/or filter based on joined
files makes SQL pretty much the only choice.

In fact, I'm tempted to use a variation of this particular problem on
the website.  In fact, I want to use two variations: one where you DON'T
need a workfile and one where you do (that will be determined by the
sort/filter requirements).  When I start building "real world" examples,
this will be a good foundation.

Joe
http://forums.plutabrothers.com/IAAI