The new docs are searchable
https://gdal.org/search.html?q=ExecuteSQL
Mateusz Loskot, mate...@loskot.net
(Sent from mobile, may suffer from top-posting)
On Thu, 23 Jan 2020, 18:04 Andrew Bell, wrote:
>
> Thanks. Just located it in the documentation. Google was not my friend
> in this case.
Thanks. Just located it in the documentation. Google was not my friend in
this case.
Sorry to bother,
On Thu, Jan 23, 2020 at 1:03 PM Even Rouault
wrote:
> On jeudi 23 janvier 2020 12:49:38 CET Andrew Bell wrote:
> > Hi,
> >
> > This function returns a pointer to a layer. Does the dataset re
On jeudi 23 janvier 2020 12:49:38 CET Andrew Bell wrote:
> Hi,
>
> This function returns a pointer to a layer. Does the dataset retain
> ownership of the layer, or does the user need to make sure that the layer
> gets deleted?
>
https://gdal.org/api/gdaldataset_cpp.html#_CPPv4N11GDALDataset10Ex
Hi,
This function returns a pointer to a layer. Does the dataset retain
ownership of the layer, or does the user need to make sure that the layer
gets deleted?
Thanks,
--
Andrew Bell
andrew.bell...@gmail.com
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yer = RclDataSource.ExecuteSQL(request, null, "");
>>>
>>> ** **
>>>
>>> Driver memDriver = Ogr.GetDriverByName("Memory");
>>>
>>> DataSource memDataSource = memDriver.CreateDataSource(GetWorkPath(
>>> "nomimpr
; > serverLayer.GetLayerDefn().GetFieldCount(); //return 3
>>> > serverLayer.GetLayerDefn().GetFieldDefn(0).GetName(); //return "D"
>>> > serverLayer.GetLayerDefn().GetFieldDefn(1).GetName(); //return
>>> "CHART_ID"
>>
0; i < memFeature.GetFieldCount(); i++)
>
> namesColumnsArray[i] = memFeature.GetFieldDefnRef(i).GetName();
>
> Geometry memGeometry = memFeature.GetGeometryRef();
>
> [/code]
>
> ** **
>
> Results :
>
> namesColumnsArray = { D , CHART_ID, WKB_GEOM
namesColumnsArray = { D , CHART_ID, WKB_GEOMETRY }
memGeometry = null
I don’t see what I can add to this :/
If you want more details said me.
Link to the thread :
http://osgeo-org.1560.n6.nabble.com/gdal-dev-Ogr-ExecuteSQL-with-MSSQL-and-geometry-column-tp4988831.
xt.Encoding.UTF8.GetBytes(memFeature.GetFieldAsString("WKB_GEOMETRY"));
> > Geometry memGeom = Geometry.CreateFromWkb(memWkb);
> > [/code]
> > Because I can't use memFeature.GetGeometryRef()
> > [code]
> > memFeature.GetLayerCount();
n't know if I have to use UTF8, ASCII, Unicode or other.
> If you know what encoding is use, or better an other trick to have a
> geometry in my memLayer or serverLayer I heard you with interest !
>
>
> Sorry for my spelling, English isn't my native tongue language.
>
> Be
r an other trick to have a
geometry in my memLayer or serverLayer I heard you with interest !
Sorry for my spelling, English isn't my native tongue language.
Benjamin
Ps : link to the thread:
http://osgeo-org.1560.n6.nabble.com/gdal-dev-Ogr-ExecuteSQL-with-MSSQL-and-geometry-column-tp49
Selon Benjamin :
> "You can access the geometry like with any other ogr feature."
>
Hopefully, memFeature.GetGeometryRef() should do it !
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etry.CreateFromWkb(memWkb);
[/code]
It's UTF8, ASCII, Unicode ?
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rverLayer ( or a layer provide by a Memory Driver) have any
> method "ChoseGeometryField" or "SetGeometryColumn" (or I have missed it).
>
>
> If I call serverDataSource.GetLayerByName("MY_TABLE").GetGeometryColumn()
> it
> work fine and result "
quot;MY_TABLE").GetGeometryColumn() it
work fine and result "WKB_GEOMETRY".
Any suggests ?
Regards,
Benjamin.
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