anchor.diff:  #enable_hashagg = on
   #enable_hashjoin = on
   #enable_indexscan = on
  +<% if node['postgresql']['version'].to_f >= 9.0 -%>
  +#enable_material = on
  +<% end -%>
   #enable_mergejoin = on
   #enable_nestloop = on
   #enable_seqscan = on
  
positive.code: #track_counts = on
  <% if node['postgresql']['version'].to_f >= 8.4 -%>
  #track_functions = none			# none, pl, all
  #track_activity_query_size = 1024
  <% end -%>
  #update_process_title = on
  #stats_temp_directory = 'pg_stat_tmp'
  
negative.code: 					#   India
  					# You can create your own file in
  					# share/timezonesets/.
  <% if node['postgresql']['version'].to_f < 9.0 -%>
  #extra_float_digits = 0			# min -15, max 2
  <% else -%>
  #extra_float_digits = 0			# min -15, max 3
  <% end -%>
  #client_encoding = sql_ascii		# actually, defaults to database
  					# encoding
  
  