RE: QUERY TO SQL

[Vernon Hamberg <vhamberg@xxxxxxxxx>]

At 12:28 PM 3/19/02 -0500, you wrote:

-snip-

>Your point about moving to SQL is interesting.  My earliest recollection of
>QMQRY is that it was intended as an API for advanced tool-builders to use to
>write their own interface to query.  I may (just may?) be full of hot air,
>but I don't think IBM ever intended RTVQMQRY and STRQMQRY to be daily-use
>tools like the would like embedded SQL to be.

Query management is a cross-platform technology. It certainly exists on
mainframes. I don't know which came first, mainframe or 400, but I suspect
mainframe. It may even be on OS/2 and AIX. But it is not first and foremost
a 400 thing. I mean, source file record lengths of 91? and 162 for forms?

QM queries made on mainframes can be IMPORTed to the 400.

There's more in the Query Management Programming manual (not Query Manager,
which is the front end to Query Management).

Concerning joins, Query/400 only matches against the primary. Doesn't SQL
have the capability to nest joins in nonlinear order? Or does it compress
everything back to the primary anyway?
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