Index: issue_query.rb
===================================================================
--- issue_query.rb	(revision 50)
+++ issue_query.rb	(working copy)
@@ -38,7 +38,7 @@
     QueryColumn.new(:total_estimated_hours,
       :sortable => "COALESCE((SELECT SUM(estimated_hours) FROM #{Issue.table_name} subtasks" +
         " WHERE subtasks.root_id = #{Issue.table_name}.root_id AND subtasks.lft >= #{Issue.table_name}.lft AND subtasks.rgt <= #{Issue.table_name}.rgt), 0)",
-      :default_order => 'desc'),
+      :default_order => 'desc', :totalable => true),
     QueryColumn.new(:done_ratio, :sortable => "#{Issue.table_name}.done_ratio", :groupable => true),
     QueryColumn.new(:created_on, :sortable => "#{Issue.table_name}.created_on", :default_order => 'desc'),
     QueryColumn.new(:closed_on, :sortable => "#{Issue.table_name}.closed_on", :default_order => 'desc'),
@@ -322,6 +322,15 @@
     map_total(scope.sum(:estimated_hours)) {|t| t.to_f.round(2)}
   end
 
+  # Returns sum of all the issue's total estimated_hours
+  def total_for_total_estimated_hours(scope)
+	total = scope.sum("COALESCE((SELECT SUM(estimated_hours) FROM #{Issue.table_name} subtasks" +
+        " WHERE subtasks.root_id = #{Issue.table_name}.root_id AND subtasks.lft >= #{Issue.table_name}.lft AND subtasks.rgt <= #{Issue.table_name}.rgt), 0)")
+
+		
+    map_total(total) {|t| t.to_f.round(2)}
+  end
+
   # Returns sum of all the issue's time entries hours
   def total_for_spent_hours(scope)
     total = if group_by_column.try(:name) == :project