[Geoserver-users] Geoserver SQL View that uses an existing fuction

GeoServer GeoServer User
1

I am attempting to create a Geoserver SQL View layer that uses an existing function in my Postgres/Postgis database.

Starting with the simplest case I have successfully created a layer using the following SQL statement on the Edit SQL View page:

SELECT geom FROM map.parcel WHERE pkid = %pkid%

Then I create a function in the database:

CREATE OR REPLACE FUNCTION map.gs_parcel (_pkid integer)

RETURNS TABLE (geom public.geometry) AS

$body$

BEGIN

RETURN QUERY

SELECT p.geom FROM map.parcel p WHERE pkid = _pkid;

END;

$body$

LANGUAGE ‘plpgsql’

VOLATILE

CALLED ON NULL INPUT

SECURITY INVOKER

COST 100 ROWS 1000;

And I try to create a SQL View using:

SELECT geom FROM map.gs_parcel(%pkid%)

But I get the error:

ERROR: function map.gs_parcel(integer) does not exist Hint: No function matches the given name and argument types. You might need to add explicit type casts. Position: 34

What am I doing wrong? I need to expand this simple example to take multiple parameters and add logic, which I can only do using pl/pgsql.

2

Hi Derek
did you give pkid a suitable default value?

Cheers
Andrea

···

On Tue, Sep 13, 2016 at 10:38 AM, Derek Watling <derek@anonymised.com> wrote:

I am attempting to create a Geoserver SQL View layer that uses an existing function in my Postgres/Postgis database.

Starting with the simplest case I have successfully created a layer using the following SQL statement on the Edit SQL View page:

SELECT geom FROM map.parcel WHERE pkid = %pkid%

Then I create a function in the database:

CREATE OR REPLACE FUNCTION map.gs_parcel (_pkid integer)

RETURNS TABLE (geom public.geometry) AS

$body$

BEGIN

RETURN QUERY

SELECT p.geom FROM map.parcel p WHERE pkid = _pkid;

END;

$body$

LANGUAGE ‘plpgsql’

VOLATILE

CALLED ON NULL INPUT

SECURITY INVOKER

COST 100 ROWS 1000;

And I try to create a SQL View using:

SELECT geom FROM map.gs_parcel(%pkid%)

But I get the error:

ERROR: function map.gs_parcel(integer) does not exist Hint: No function matches the given name and argument types. You might need to add explicit type casts. Position: 34

What am I doing wrong? I need to expand this simple example to take multiple parameters and add logic, which I can only do using pl/pgsql.

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3

I have supplied a default value of 0.

I enter the "View Name" and "SQL statement" and click "Guess parameters from
SQL". When it brings up the list I enter the "Default value" and then click
"Refresh" under "Attributes". This is when I get the error.

<http://osgeo-org.1560.x6.nabble.com/file/n5285490/GeoserverSQLViewError.png&gt;

I am running 64bit versions of GeoServer 2.9.0 / Tomcat 8.5.4 / PostgreSQL
9.5.3 / PostGIS 2.2.2 on Windows 2012 R2.

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4

Sorry, I was suffering from cross-server confusion.

I created the Postgres function on my local development server and was tring
to access it from GeoServer running on our production server.

This part of the problem solved.

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