On Thu, 8 Jan 2015 08:42:25 +0000
Hick Gunter <h...@scigames.at> wrote:

> It is legal and well defined in SQLite. See the explain output below.
> This is because of the well-documented feature of SQLite that columns
> that are neither GROUPED BY nor aggregated will have a defined value.

OK, understood, "in SQLite".  Thanks.  UIUC, I wouldn't call it "well"
defined because of the effect of the ungrouped column: 

> the b value returned for each a will be (an arbitrary one) 

so two SELECTs taking advantage of this aspect of SQLite may return
different results for the same data.  

--jkl
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