Author: Christof Wollenhaupt
Posted: 2012-03-13 at 15:55:24
SQL seems to be integrated into the VFP language, but there are really two
engines in VFP: xBase and SQL. There are many similarities, but also
differences. For instance, xBase uses SET EXACT and SET NEAR while SQL
abides to SET ANSI. Rushmore optimization rules are different between the
two.
Relations are part of the xBase world. They are completely ignored by the
SQL engine (technically, because the tables are opened a second time using
a random alias).
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