Michael Glaesemann <grzm@myrealbox.com> writes:
> Looking through the documentation source, I came across sql.sgml, a
> section that covers relational theory and SQL. It's no longer compiled
> with the docs, afaics, and hasn't been since 7.1.
I am not totally sure why we stopped including that, but I seem to
recall that we couldn't get all the mathematical notation to convert
to DocBook nicely. I also misdoubt that the math wouldn't scare off
the people who need it most.
I agree that a little bit of basic theory might go well as a chapter in
the tutorial ... but whether this is a good starting point is another
question.
regards, tom lane
