    # File lib/active_record/connection_adapters/postgresql_adapter.rb, line 637
          def indexes(table_name, name = nil)
             schemas = schema_search_path.split(/,/).map { |p| quote(p) }.join(',')
             result = query("SELECT distinct i.relname, d.indisunique, a.attname\nFROM pg_class t, pg_class i, pg_index d, pg_attribute a\nWHERE i.relkind = 'i'\nAND d.indexrelid = i.oid\nAND d.indisprimary = 'f'\nAND t.oid = d.indrelid\nAND t.relname = '\#{table_name}'\nAND i.relnamespace IN (SELECT oid FROM pg_namespace WHERE nspname IN (\#{schemas}) )\nAND a.attrelid = t.oid\nAND ( d.indkey[0]=a.attnum OR d.indkey[1]=a.attnum\nOR d.indkey[2]=a.attnum OR d.indkey[3]=a.attnum\nOR d.indkey[4]=a.attnum OR d.indkey[5]=a.attnum\nOR d.indkey[6]=a.attnum OR d.indkey[7]=a.attnum\nOR d.indkey[8]=a.attnum OR d.indkey[9]=a.attnum )\nORDER BY i.relname\n", name)

            current_index = nil
            indexes = []

            result.each do |row|
              if current_index != row[0]
                indexes << IndexDefinition.new(table_name, row[0], row[1] == "t", [])
                current_index = row[0]
              end

              indexes.last.columns << row[2]
            end

            indexes
          end