Milo, List,
changing to
DATA 'tc_vlak_geometry from "nl_imro_0026_svbbu_0001" using unique geoidn using
SRID = 28992'
and also
DATA 'tc_vlak_geometry from "nl_imro_0026_svbbu_0001" using unique geoidn using
srid = 28992'
fails, but:
DATA 'tc_vlak_geometry from "nl_imro_0026_svbbu_0001" using unique
geoidn using SRID=28992'
and
DATA 'tc_vlak_geometry from "nl_imro_0026_svbbu_0001" using unique
geoidn using srid=28992'
both work as it should.
I allready tried things like that before, but apparently got something
wrong in the details like having spaces around the =
Great, thank you very much.
MArco
Milo van der Linden schreef:
Hello Marco,
If you do not specify ...using unique geoidnd using SRID=28992'
mapserver will search the table for srid information, again sending the
table name in a query to the database as seen in the error message.
I agree that this might be a tiny bug, but it might be a workaround to
define the srid in the DATA clause.
Kind regards,
Milo van der Linden
On Mon, 2009-06-22 at 15:02 +0200, DeDuikertjes wrote:
Dear List,
I've extensively searched the archives, saw a couple of more or less
related posts, but couldn't find any solutions for my problem.
In my mapserver application I use postgis as a data source.
In my application the tables containing geometry columns do need to have
odd characters like . and - in their names (for clarity: the table names
that is, not the column names).
Postgis allows this by double qouting the table name in functions,
queries and sql statements.
So in mapserver I like to do that as well as in the following example:
DATA 'tc_vlak_geometry from "nl_imro_0026_svbbu_0001" using unique geoidn'
Unfortunately that fails with a message from the WMS:
msDrawMap(): Image handling error. Failed to draw layer named
'geoidNL.IMRO.SVBBU-102-_vlak'. prepare_database(): Query error. Error
executing POSTGIS DECLARE (the actual query) statement: 'DECLARE
mycursor BINARY CURSOR FOR SELECT
asbinary(force_collection(force_2d(tc_vlak_geometry)),'NDR'),geoidn::text
from "nl_imro_0026_svbbu_0001" WHERE tc_vlak_geometry &&
setSRID('BOX3D(155016 467631,156758 470080)'::BOX3D,
find_srid('','"nl_imro_0026_svbbu_0001"','tc_vlak_geometry') )'
Postgresql reports the error as 'ERROR: find_srid() - couldnt find the
corresponding SRID - is the geometry registered in the GEOMETRY_COLUMNS
table? Is there an uppercase/lowercase missmatch? ' More Help: Error
with POSTGIS data variable. You specified 'check your .map file'.
Standard ways of specifiying are : (1) 'geometry_column from
geometry_table' (2) 'geometry_column from (sub query) as foo using
unique column name using SRID=srid#' Make sure you put in the 'using
unique column name' and 'using SRID=#' clauses in. For more help, please
see http://postgis.refractions.net/documentation/ Mappostgis.c - version
of Jan 23/2004
Removing the quotes works fine and gives a map from the WMS.
Of course removing the quotes in this example is no problem because
there are no odd characters like . and -.
When tablenames do have these characters, the query of course fails.
Are there any workarounds for this problem other than renaming tables to
names without odd characters?
(and yes, I've tried to add using srid = 28992 to the DATA string, but
that doesn't help).
(and yes, I've tried escaping double quotes like DATA "'tc_vlak_geometry
from \"nl_imro_0026_svbbu_0001\" using unique geoidn"')
Any help greatly appreciated.
MArco
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