I have a MSSQL (2008 R2) SQL view that is visible and displayable within QGIS (LTR ESSEN 2.14.15) itself. However if I attempt to style the results by classification the map display disappears. If I add any form of querying to the table it disappears.
But I can't apply any styling or additional queries to the table whilst it is returning a table full of Errors.
Sadly this doesn't appear to be specific to this one particular view, but any view I'm pushing through to QGIS.
Has anyone ever encountered this type of behaviour before? And any concept of how to fix?