diff --git a/MediaBrowser.Controller/Entities/Folder.cs b/MediaBrowser.Controller/Entities/Folder.cs
index cbbd0ad686..0d307c35bc 100644
--- a/MediaBrowser.Controller/Entities/Folder.cs
+++ b/MediaBrowser.Controller/Entities/Folder.cs
@@ -793,11 +793,6 @@ namespace MediaBrowser.Controller.Entities
                     Logger.Debug("Query requires post-filtering due to ItemSortBy.Metascore");
                     return true;
                 }
-                if (query.SortBy.Contains(ItemSortBy.OfficialRating, StringComparer.OrdinalIgnoreCase))
-                {
-                    Logger.Debug("Query requires post-filtering due to ItemSortBy.OfficialRating");
-                    return true;
-                }
                 if (query.SortBy.Contains(ItemSortBy.Players, StringComparer.OrdinalIgnoreCase))
                 {
                     Logger.Debug("Query requires post-filtering due to ItemSortBy.Players");
@@ -813,11 +808,6 @@ namespace MediaBrowser.Controller.Entities
                     Logger.Debug("Query requires post-filtering due to ItemSortBy.SeriesSortName");
                     return true;
                 }
-                if (query.SortBy.Contains(ItemSortBy.Studio, StringComparer.OrdinalIgnoreCase))
-                {
-                    Logger.Debug("Query requires post-filtering due to ItemSortBy.Studio");
-                    return true;
-                }
                 if (query.SortBy.Contains(ItemSortBy.VideoBitRate, StringComparer.OrdinalIgnoreCase))
                 {
                     Logger.Debug("Query requires post-filtering due to ItemSortBy.VideoBitRate");
@@ -962,12 +952,6 @@ namespace MediaBrowser.Controller.Entities
                 return true;
             }
 
-            if (query.OfficialRatings.Length > 0)
-            {
-                Logger.Debug("Query requires post-filtering due to OfficialRatings");
-                return true;
-            }
-
             if (query.IsMissing.HasValue)
             {
                 Logger.Debug("Query requires post-filtering due to IsMissing");
diff --git a/MediaBrowser.Server.Implementations/Persistence/SqliteItemRepository.cs b/MediaBrowser.Server.Implementations/Persistence/SqliteItemRepository.cs
index 131158dd2d..9b815bc0b2 100644
--- a/MediaBrowser.Server.Implementations/Persistence/SqliteItemRepository.cs
+++ b/MediaBrowser.Server.Implementations/Persistence/SqliteItemRepository.cs
@@ -1913,6 +1913,14 @@ namespace MediaBrowser.Server.Implementations.Persistence
             {
                 return new Tuple<string, bool>("(select value from itemvalues where ItemId=Guid and Type=1 LIMIT 1)", false);
             }
+            if (string.Equals(name, ItemSortBy.OfficialRating, StringComparison.OrdinalIgnoreCase))
+            {
+                return new Tuple<string, bool>("ParentalRatingValue", false);
+            }
+            if (string.Equals(name, ItemSortBy.Studio, StringComparison.OrdinalIgnoreCase))
+            {
+                return new Tuple<string, bool>("(select value from itemvalues where ItemId=Guid and Type=3 LIMIT 1)", false);
+            }
 
             return new Tuple<string, bool>(name, false);
         }
@@ -2573,6 +2581,20 @@ namespace MediaBrowser.Server.Implementations.Persistence
                 whereClauses.Add(clause);
             }
 
+            if (query.OfficialRatings.Length > 0)
+            {
+                var clauses = new List<string>();
+                var index = 0;
+                foreach (var item in query.OfficialRatings)
+                {
+                    clauses.Add("OfficialRating=@OfficialRating" + index);
+                    cmd.Parameters.Add(cmd, "@OfficialRating" + index, DbType.String).Value = item;
+                    index++;
+                }
+                var clause = "(" + string.Join(" OR ", clauses.ToArray()) + ")";
+                whereClauses.Add(clause);
+            }
+
             if (query.MinParentalRating.HasValue)
             {
                 whereClauses.Add("InheritedParentalRatingValue<=@MinParentalRating");