>>>
>>>Any example of query that would not work both ways?
>>>
>>
>>Here's a trivial example.
>>
>>VFP
>>SELECT * FROM billing WHERE inv_date = {01/31/17}
>>
>>SQL Server
>>SELECT * FROM billing where inv_date = '2017-01-31'
>>
>
>

>SELECT * FROM billing WHERE inv_date = ?({^2017-01-31})
>

>
>will work both with VFP tables and cursors, either directly or through SPT, and with any SQL back-end (MSSQL, MySQL, Oracle, ...), won't require any intermediate storage, and will assure that date ambiguity won't occur.

Yes.
Good solution.
However, would you write it that way if your backend were only SQL Server?
My point is that using one code base for two backends requires this kind of code.