On Mon, Jul 13, 2009 at 06:37:47PM +0000, Tobias wrote:
> 
> As mentioned before, the purpose of the expression function is:
> development, prove of concept, testablity;  a small step before the SQL
> expression.  Furthermore, I'm not sure whether all of our database
> backends support expressions like "a BETWEEN x AND y" or "a IN (1, 2,
> 5)", and IIRC we store integers as CHARs;  reasons enough to use Python
> expressions for a first shot, I think.

Fine. You'll need a python expression for the non-SQL backends. I think
only anydbm is left of these.