After a bit of experimentation I have discovered that
using single quotes, to enclose the element value, allows
double quotes to be used in the query.
ie:
DATA 'the_geom from (select oid,gid, the_geom,
"Area","Perimeter","PixelValue" FROM global_Land_poly WHERE
"PixelValue"=1 ) AS FOO using SRID=4326'
Thanks to all,
Peter
Peter Willis wrote:
I tried that. I get the following error:
loadLayer(): Unknown identifier. Parsing error near (Area):(line 30)
Mapserver doesn't appear to like the additional formatting.
Do I need to recompile with system regex I wonder....?
Peter
Adam Eskreis wrote:
You could try regex
\"Area\"
-Adam
On Wed, May 27, 2009 at 6:48 PM, Peter Willis <pet...@borstad.com
<mailto:pet...@borstad.com>> wrote:
Hello,
I am having a problem serving a PostGIS layer via mapserver
as WFS.
The problem arises from the generation/use of column names
in PostgreSQL that require double quotes.
ie:
SELECT oid,gid, the_geom, "Area","Perimeter","PixelValue" FROM
global_Land_poly WHERE "PixelValue"=1;
In the map file the 'DATA' member of the PostGIS layer is defined as:
DATA "the_geom from (select oid,gid, the_geom,
Area,Perimeter,PixelValue FROM global_Land_poly WHERE PixelValue=1 )
AS FOO using SRID=4326"
<ERR>Mapserver relays a PostGIS error from PostgreSQL:
'ERROR: column "area" does not exist...</ERR>
This is because the column name is actually "Area"
and requires quotes.
How do I define double quotes in my PostGIS query
within the 'DATA' element of my mapfile layer?
Thanks for any enlightenment,
Peter
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Peter Willis
Remote Sensing Analyst, Programmer, Electronics Technician
ASL Borstad Remote Sensing Inc.
1986 Mills Road
Sidney, British Columbia, Canada V8L5Y3
Tel: 250-656-0177 extension 135
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