We have a MSSQL 2012 View added as a layer in Geoserver 2.17.2 that performs
well with GetMap requests but times out with GetFeature requests.
We have tracked it down to the following Query sent from Geoserver to MSSQL:
SELECT top 1000 * FROM "schema"."MyTable_view"
WHERE (
"SHAPE".Filter(geometry::STGeomFromText('POLYGON ((<ListOfPoints>))', 4326))
= 1 AND
"SHAPE".STIntersects(geometry::STGeomFromText('POLYGON
((<ListOfPoints>))', 4326)) = 1 AND
"Field1" = 1234 AND
"Field1" IS NOT NULL
)
The view is just an inner join between two tables, both of which have a
variety of indexes including a proper spatial index on the "shape" field.
If I run this query manually against SQL, it basically runs indefinitely.
HOWEVER,
1. if I remove the "SHAPE".Filter() function in the where clause, it
returns results in less than a second.
2. If I remove the subsequent "Field1" query criteria from the where
clause, it returns results in less than a second. I assume this points to
the culprit here being that it is using the Field1 index instead of the
spatial index on the tables.
Is there a good solution to this problem? We are somewhat new to Geoserver,
so we may very well be doing something wrong. I have tried to find a way to
force the spatial query in the view with no luck. Any help would be much
appreciated!
Thanks,
Matt
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