OGR Virtual problem with Where clause

[James Perrins]

Hi,

 

I'm just experimenting with this - (just discovered it :-)) which looks
great.  

I'm calling from mapserver with the XML connection statement in the map file
(IIS5 + Mapserver 4.6.1)

 

I've been playing with MDB and SQL Server - both of which I can get to plot
points and polygons (with WKT)

In the examples below - KeyField is an Integer in the database and Name is a
text / nvarchar (50)

 

Plotting the whole layer works fine

<SrcSQL>SELECT * FROM TestPolygon</SrcSQL>

 

Using a filter on an integer field works fine 

<SrcSQL>SELECT * FROM TestPolygon WHERE KeyField=1</SrcSQL>

 

But I just can't get it to filter using any other sort of where clause -
specifically text string e.g.

<SrcSQL>SELECT * FROM TestPolygon WHERE Name="Cosh"</SrcSQL>

 

I've tried a variety of syntaxes but no success - everything I try returns
something like:

SQL statement failed, or returned no layer result:

SELECT GEOMETRY FROM TestPolygon WHERE Name="Cosh"

 

Can anyone help me out ?

Have I got the syntax wrong - if so is there any doc that details this ?

Looking at others questions they seem to have it working - do I need to be
careful of build versions?

 

Many Thanks

James

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapserver-users/attachments/20060330/9d66dd60/attachment.html