Re: relations VFP9 SP2

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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©2012 Christof Wollenhaupt