Fix some issues with Script As Select (#474)

src/Microsoft.SqlTools.ServiceLayer/Connection/ConnectionService.cs

@@ -16,6 +16,7 @@ using System.Threading.Tasks;
 using Microsoft.SqlTools.Hosting.Protocol;
 using Microsoft.SqlTools.ServiceLayer.Connection.Contracts;
 using Microsoft.SqlTools.ServiceLayer.Connection.ReliableConnection;
+using Microsoft.SqlTools.ServiceLayer.LanguageServices;
 using Microsoft.SqlTools.ServiceLayer.LanguageServices.Contracts;
 using Microsoft.SqlTools.ServiceLayer.SqlContext;
 using Microsoft.SqlTools.ServiceLayer.Workspace;
@@ -64,6 +65,8 @@ namespace Microsoft.SqlTools.ServiceLayer.Connection
 
         private readonly object cancellationTokenSourceLock = new object();
 
+        private ConnectedBindingQueue connectionQueue = new ConnectedBindingQueue(needsMetadata: false);
+
         /// <summary>
         /// Map from script URIs to ConnectionInfo objects
         /// This is internal for testing access only
@@ -86,6 +89,17 @@ namespace Microsoft.SqlTools.ServiceLayer.Connection
             set;
         }
 
+        /// <summary>
+        /// Gets the connection queue
+        /// </summary>
+        internal ConnectedBindingQueue ConnectionQueue
+        {
+            get
+            {
+                return this.connectionQueue;
+            }
+        }
+
         /// <summary>
         /// Default constructor should be private since it's a singleton class, but we need a constructor
         /// for use in unit test mocking.