SQL WHERE in OGR VRT

[Fawcett, David]

As an update, this is the OVF file that I was using:
 
<OGRVRTDataSource>
     <OGRVRTLayer name="facilities">
      <SrcDataSource>ODBC:myname/mypass at mydsn</SrcDataSource>
      <SrcSQL>SELECT FClass, UTMX, UTMY, NameShort FROM tlkpDestFac WHERE FClass = 1</SrcSQL>
      <LayerSRS>epsg:32615</LayerSRS>
      <GeometryType>wkbPoint</GeometryType>
      <GeometryField encoding="pointFromColumns" x="UTMX" y="UTMY"/>
     </OGRVRTLayer>
</OGRVRTDataSource>
 
After removing the line 
 
<LayerSRS>epsg:32615</LayerSRS>
 
It works.  Fortunately, for this application, I don't need to project the data.  
 
David.

David Fawcett 
Minnesota Office of Environmental Assistance 
david.fawcett at moea.state.mn.us 
651.215.0200 

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On Behalf Of Fawcett, David
Sent: Wednesday, April 27, 2005 4:00 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] SQL WHERE in OGR VRT


What is the lowest MapServer Version where SQL WHERE is supported in ORG VRT's?  
 
I am playing with a virtual layer that connects to an Access database using OGR.  The layer works great when I use <SrcLayer>tlkpDestFac</SrcLayer> and call up all of the elements in the file.  
 
I attempted to filter the layer by using <SrcSQL>SELECT FClass, UTMX, UTMY, NameShort FROM tlkpDestFac WHERE FClass = 1</SrcSQL>  in place of <SrcLayer> .  Using the MapServer 4.4.1 binary from MapTools, I get the error ' msDrawMap(): Image handling error. Failed to draw layer named 'facilities'. 
msOGRFileOpen(): OGR error. Open failed for OGR connection `facslf.ovf'. Failed to import LayerSRS `epsg:32615'. '  
 
If I hit the same .ovf file with ogrinfo 1.2.5+ in the FW Tools package, it is read just fine.  
 
Thanks, 
 
David. 

David Fawcett 
Minnesota Office of Environmental Assistance 
david.fawcett at moea.state.mn.us 
651.215.0200 

 

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