How have you defined db? The _adapter attribute of a DAL instance should be 
a "SQLiteAdapter" object when using SQLite, not a "SQLite" object.

Anthony

On Tuesday, December 20, 2016 at 5:00:02 AM UTC-5, Jurgis Pralgauskis wrote:
>
> I have searchform, 
>
> where one can define various fields and mapping to expressions for 
> comparison, 
> and it automatically constructs select query, 
>
> but if I want to check if expression is aggregate, and direct thesese 
> queries to "having"
>
> but if I try 
>
> if filter.target_expression.op == db._adapter.AGGREGATE:
>
> I get 
>
> AttributeError: 'SQLite' object has no attribute 'AGGREGATE'
>
>
>
>
>

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