After instrospection,
when adding to QGIS an 'OGR VRT' layer with SrcSql tag,
iterarator with spatial filter return no features.
This seems to be due to OGR.
Does anybody know a workaround about this ?
Arnaud
I am working with OGR VRT files in QGIS.
When I use the "SrcLayer" tag, all works correctly.
But when I use "SrcSQL" tag, QGIS seems to load the file correctly, but
nothing appears in the canvas.
exemple:
<OGRVRTDataSource>
<OGRVRTLayer name="test_shp_sql">
<SrcDataSource relativeToVRT="1">test.shp</SrcDataSource>
<SrcSQL dialect="sqlite">SELECT * FROM test</SrcSQL>
</OGRVRTLayer>
</OGRVRTDataSource>
all attributes are correctly displayed in the attribute table.
when I use Save As ... to another shapefile, the new file display correctly.
"ogrinfo -la" gives me exactly the same results for "SrcLayer" and
"SrcSQL" tags.
I've also tried the getWKT plugin which give me the same result for
features from the two layers.
I do not understand what goes wrong : OGR or QGIS ?
Arnaud
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