[gdal-dev] Re: OGR SQL Parser/Evaluator Overhaul

Frank Warmerdam warmerdam at pobox.com
Mon Aug 2 10:16:59 EDT 2010


Carlo A. Bertelli (Charta s.r.l.) wrote:
> Thank you very much to you, Frank, and Camp To Camp. This is a very
> welcome addition for file based datasources.
> GDAL is becoming more and more powerful, versatile, useful and ... big.
> Maybe you could add a
> -straight
> clause so to avoid the parser. GDAL/OGR shoud remain fast when used
> only as a conversion library.

Carlo,

The SQL expression parser is used for ExecuteSQL() SELECT statements and
when you set an attribute filter with SetAttributeFilter().  If neither
of these are used, such as in a plain ogr2ogr call, there is no use of the
SQL engine.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent



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