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@@ -57,6 +57,8 @@ end
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 # Mime::Type.register "text/richtext", :rtf
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 # Mime::Type.register "application/x-mobile", :mobile
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+require "try"
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+
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 # File used to include the inflections not solved by the RoR inflector
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 META_RAILS_INFLECTIONS_FILE = File.join("#{RAILS_ROOT}/config","metarails_inflections.rb")
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 require META_RAILS_INFLECTIONS_FILE if File.exists? META_RAILS_INFLECTIONS_FILE

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@@ -173,11 +173,11 @@ module MetaQuery
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       st.from[from_tables]
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       joins = all_joins_sql#.sort_by {|j| j[1].to_s.size} # order by key size bigger key --> deeper in the query ...
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-#      raise all_joins_sql.to_json
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+      #      raise all_joins_sql.to_json
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       joins.each do |join_def|
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         st.left_join[join_def[1]]
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-       # st.send(:"#{join_def[0].gsub(" ", "_")}")[join_def[1]]
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-       # raise join_def[2]
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+        # st.send(:"#{join_def[0].gsub(" ", "_")}")[join_def[1]]
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+        # raise join_def[2]
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         st.on { eval join_def[2] }
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       end
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@@ -266,8 +266,21 @@ module MetaQuery
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             joins << [join_type, join_table, join_condition]
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           end
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         end     
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-      end  
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-      joins
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+      end
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+
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+      # Order joins. Objective: Declare the tables before using them in join conditions.
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+     joins = joins.sort_by do |join|
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+        j_tables_declaration = joins.collect {|j| j[1].to_s.split(" ")[-1]}.flatten       
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+        idx = joins.index join              
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+          # Take the farthest table declaration position of each tables in the
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+          # join condition. Move all the correct positions before (idx - joins.size),
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+          # and the tables that need a table that is declared before, put them in the
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+          # old table definition position.
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+          far_table_condition_position = join[2].scan(/(\w+_\w+)\./).flatten.collect do |join_cond_table|
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+              j_tables_declaration.index(join_cond_table) if j_tables_declaration[idx+1..-1].include?(join_cond_table)
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+          end.compact.max || (idx - joins.size)
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+          # FIXME: (--> needs) [a --> b], [b --> c], [c --> c] (think if is a possible situation)
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+      end
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     end
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     def all_sql_conditions