View Column Types Not Supported - Entity Framework

I have a view like similar to this in my SQLite database

SELECT * FROM (
    SELECT * FROM (
        SELECT fc.FilterCommandId, fc.ProcedureId, 1 AS IsDynamic, 
               substr(fc.DataType, 1, 20) || fc.Sequence AS Filter, fc.ObjectName 
        FROM ((FilterCommands fc INNER JOIN DynamicFilterCommands dfc 
             ON fc.FilterCommandId = dfc.FilterCommandId) 
        INNER JOIN DynamicFilterCommandFields dfcf 
             ON dfc.DynamicFilterCommandId = dfcf.DynamicFilterCommandId) 
        INNER JOIN ProcedureFilterKeys pfk ON fc.ProcedureId = pfk.ProcedureId 
        GROUP BY fc.FilterCommandId, fc.ProcedureId, 1, 
                 substr(fc.datatype, 1, 20) || fc.Sequence, fc.ObjectName
        ORDER BY fc.SortOrder
   ) AS sq 
   UNION 
   SELECT fc.FilterCommandId, fc.ProcedureId, 0, substr(fc.datatype, 1, 20) || fc.Sequence, 
          NULL
   FROM FilterCommands fc INNER JOIN StaticFilterCommands sfc 
        ON fc.FilterCommandId = sfc.FilterCommandId
)

The problem I am having is mapping all the columns in EF. I am getting Error Code 6005 (The data type '' is currently not supported for the target Entity Framework version) for several of the columns. It appears to affect literal values provided in the view (1 AS IsDynamic, for instance), and values taken directly from tables (fc.ObjectName, although this is provided the value of NULL for the second part of the UNION query)

This results in the columns not being mapped to the view. I want this view to be read only, so I am not worried about updating. But I would like the columns to be available for the application.

Has anyone experienced this issue, or have ideas on fixing?