Tim Schaub wrote:
I've noticed similarly strange behavior when running a query on inline OVF data
(also with PHP mapscript - details below). My virtual layer reads from a table
with a multi-column primary key in a MySQL database. I get three types of
funky behavior with this:
1) If I don't specify an <FID> in my inline OVF, querying works as expeced until I call
$layer->close() - Apache reports "premature end of script headers" only when I try to
close the queried layer.
Tim,
Can you reproduce this problem in a more controlled circumstance? Perhaps
with ogrinfo? Something I could easily reproduce?
There was a problem at one time a problem with OGR virtual layers
crashing on close but that should have been fixed in GDAL 1.3.1.
Is there any chance you are using something old like 1.2.6?
2) If I change my primary key to an auto-numbered field and set <FID>id<FID> (where id is
my auto-numbered field), I get "Unable to identify field 'id'".
This is not expected. If I could reproduce it I would look into fixing it.
3) If I set <FID>some_other_field</FID> then everything works as expected -
even if the values in some_other_field are not unique.
Hmm, I would have expected you would get the wrong query results back
sometimes.
Best regards,
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