console output from thinking_sphinx:index

indexing index 'place_core'...
ERROR: index 'place_core': sql_range_query: Column 'context' in on clause is amb
iguous (DSN=mysql://root:***@localhost:3306/planet).
total 0 docs, 0 bytes
total 0.064 sec, 0.00 bytes/sec, 0.00 docs/sec
distributed index 'place' can not be directly indexed; skipping.

development.sphinx.conf

sql_query        = SELECT `places`.`id` * 1 + 0 AS `id` , CAST(GROUP_CONCAT(`tags`.`name` SEPARATOR ' ') AS CHAR) AS `place_kind`, CAST(GROUP_CONCAT(`pays_kinds_places`.`name` SEPARATOR ' ') AS CHAR) AS `pays_kind`, CAST(GROUP_CONCAT(`menu_kinds_places`.`name` SEPARATOR ' ') AS CHAR) AS `menu_kind`, CAST(GROUP_CONCAT(`music_kinds_places`.`name` SEPARATOR ' ') AS CHAR) AS `music_kind`, CAST(GROUP_CONCAT(`service_kinds_places`.`name` SEPARATOR ' ') AS CHAR) AS `service_kind`, `places`.`id` AS `sphinx_internal_id`, 3051125961 AS `class_crc`, '3051125961' AS `subclass_crcs`, 0 AS `sphinx_deleted` FROM places    LEFT OUTER JOIN `taggings` ON (`places`.`id` = `taggings`.`taggable_id` AND `taggings`.`taggable_type` = 'Place')  LEFT OUTER JOIN `tags` ON (`tags`.`id` = `taggings`.`tag_id`) AND context = 'place_kind'   LEFT OUTER JOIN `taggings` pays_kinds_places_join ON (`places`.`id` = `pays_kinds_places_join`.`taggable_id` AND `pays_kinds_places_join`.`taggable_type` = 'Place')  LEFT OUTER JOIN `tags` pays_kinds_places ON (`pays_kinds_places`.`id` = `pays_kinds_places_join`.`tag_id`) AND context = 'pays_kind'   LEFT OUTER JOIN `taggings` menu_kinds_places_join ON (`places`.`id` = `menu_kinds_places_join`.`taggable_id` AND `menu_kinds_places_join`.`taggable_type` = 'Place')  LEFT OUTER JOIN `tags` menu_kinds_places ON (`menu_kinds_places`.`id` = `menu_kinds_places_join`.`tag_id`) AND context = 'menu_kind'   LEFT OUTER JOIN `taggings` music_kinds_places_join ON (`places`.`id` = `music_kinds_places_join`.`taggable_id` AND `music_kinds_places_join`.`taggable_type` = 'Place')  LEFT OUTER JOIN `tags` music_kinds_places ON (`music_kinds_places`.`id` = `music_kinds_places_join`.`tag_id`) AND context = 'music_kind'   LEFT OUTER JOIN `taggings` service_kinds_places_join ON (`places`.`id` = `service_kinds_places_join`.`taggable_id` AND `service_kinds_places_join`.`taggable_type` = 'Place')  LEFT OUTER JOIN `tags` service_kinds_places ON (`service_kinds_places`.`id` = `service_kinds_places_join`.`tag_id`) AND context = 'service_kind'  WHERE `places`.`id` >= $start   AND `places`.`id` <= $end    GROUP BY `places`.`id`  ORDER BY NULL
sql_query_range  = SELECT MIN(`id`), MAX(`id`) FROM `places` 
sql_query_info   = SELECT * FROM `places` WHERE  `id` = (($id - 0) / 1)
sql_attr_uint        = sphinx_internal_id
  sql_attr_uint        = class_crc
  sql_attr_multi       = uint subclass_crcs from field
  sql_attr_uint        = sphinx_deleted

}

place.rb

class Place < ActiveRecord::Base
  acts_as_taggable_on :place_kind
  acts_as_taggable_on :menu_kind
  acts_as_taggable_on :music_kind
  acts_as_taggable_on :service_kind

  define_index do 
    indexes place_kind.name, :as => :place_kind
    indexes pays_kind.name, :as => :pays_kind
    indexes menu_kind.name, :as => :menu_kind
    indexes music_kind.name, :as => :music_kind
    indexes service_kind.name, :as => :service_kind
  end
end