[postgis-users] Problem extracting SQL Server Geometry (or, what is the 0x character?)

[Brent Wood]

Hey Ben...
Long time!
In the absence of a more elegant approach...

You could try the FDW query going via WKT rather than WKB - so deconstruct then reconstruct?
Minor overhead for a one-off transfer, perhaps more of an issue for a working query.
I use both fdw & OGR virtual data source to access data from Specify (MySQL) in QGIS. Both work fine. Different sorts of issues with each. So fdw is not just used for data transfers :-)
Cheers,
  Brent

      From: Ben Madin <ben at ausvet.com.au>
 To: PostGIS Users Discussion <postgis-users at lists.osgeo.org> 
 Sent: Saturday, October 15, 2016 1:03 PM
 Subject: [postgis-users] Problem extracting SQL Server Geometry (or, what is the 0x character?)
   
G'day all,
I hope a simple case of something I've missed, but we are trying to extract data from a SQL Server database into PostGIS use tds_fdw... the data in SQL Server appears to be in WKB - but when when connect to this field we have a precursor 0x. I can't find any references to anyone else suffering this problem, but that could be because I'm trying a lazy approach to automate retrieval of hundreds of tables using the FDW (that's what it is for, right?)
I'm left with a sense that it is an encoding error between the two systems? I've tried making the fdw column text instead of geometry, but I can't get rid of the 0x, and no amount of trying to cajole the text to any other form makes it any happier. 
To complicate it, for testing I'm going from SQL Server 2014 (running in Windows 8.1 in a VM) to PostgreSQL 9.4 on a Mac (El Capitan) using tds_fdw compiled on the same mac. POSTGIS="2.2.2 r14797" GEOS="3.5.0-CAPI-1.9.0 r0" PROJ="Rel. 4.9.2, 08 September 2015" GDAL="GDAL 2.1.1, released 2016/07/07" LIBXML="2.7.8" LIBJSON="0.12.1" RASTER
Any ideas gratefully received? 
cheers
Ben




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e : ben at ausvet.com.au
10 High Street, FremantleWestern Australia
on the web: www.ausvet.com.au


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