On Mon, 11 Mar 2013 12:47:02 +0100
Clemens Ladisch <clem...@ladisch.de> wrote:

> James K. Lowden wrote:
> > I'm not sure how to manage the lifetime of ancillary data for a
> > user-defined function added by sqlite3_create_function ().
> 
> http://www.sqlite.org/c3ref/aggregate_context.html
> 
> > Will xStep be called again after it raises an error?
> 
> xStep does not raise an error.  Set a flag, and return an error in
> xFinish.

Many thanks, Clemens.  That does the trick nicely.  

--jkl
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