[gdal-dev] GetFIDColumn : FID Column for ESRI Shape file

[Gane R]

Now for FileGeoDB datasets
====================
1. For FileGeoDB GetFIDColumn returns a column name
for some data set it is a part of feature values with _1, for some there
doesn't exist any feature value

2. GetFID returns a number for some data set and it is sequential, for
others the value returned are not in order.

Can any provide any links or pointer or enlighten me on this stuff.

Gane

On Wed, Sep 30, 2015 at 7:07 PM, Even Rouault <even.rouault at spatialys.com>
wrote:

> Le mercredi 30 septembre 2015 15:32:40, Gane R a écrit :
> > Hi,
> >
> > Is it that OGRLayer::GetFIDColumn will return empty string for Shapefile
> I
> > have or it will be always empty for all shape files?
>
> Always empty
>
> >
> > If I can see FID Column for a shape file in any other application can you
> > name any one of them
>
> They likely use a conventionnal name. But technically there's no field in
> the
> .dbf or the .shp to hold the name of the FID.
> Also good to know: the OGR shapefile driver starts its numbering at 0 for
> the
> FID.
>
> >
> >
> > Gane
>
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