The reason you should always use m. prefix is that if you have an open table selected, and a field has the same name as a variable, VFP will ALWAYS refer to the field UNLESS you use m. And m. is a little bit faster.
Hello Tore, I was aware of this. I guess I've alway used other naming conventions to avoid this Conflict. As far as the performance issue in my testing the difference is negligible.
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