Hii, all...
Please help me to join a database postgresql in pmapper. i'm using pampper 
4.2.0, mapserver 6.0.1, postgresql 8.3


i has tried in postgresql with sql syntax:

SELECT province.the_geom as the_geom, province.province_id as p_id, 
town.town_id as t_id
FROM province JOIN town
ON province.province_id = town.province_id

it's worked, but if i'm trying in file .map it's error "still loading".

please look my file .map and correct this if you know:

LAYER
  NAME "join"
  TYPE POINT
  STATUS DEFAULT
  CONNECTIONTYPE postgis
  CONNECTION "host=localhost port=5432 dbname=test user=postgres 
password=postgresql"
  DATA 'the_geom from (SELECT province.the_geom as the_geom, 
province.province_id as p_id, town.town_id as t_id
FROM province JOIN town
ON province.province_id = town.province_id) as subquery USING UNIQUE gid USING 
srid=-1'
  TEMPLATE void
  PROJECTION
    # WGS84
    "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs "
  END 
  METADATA 
    "DESCRIPTION" ""
    "RESULT_FIELDS" ""
    "RESULT_HEADERS" ""
"LAYER_ENCODING" "UTF-8"
    "ows_title" ""
  END
  CLASS
    NAME "join"
    # TEMPLATE
    COLOR 151 1 222
    OUTLINECOLOR 255 0 255
    SYMBOL 'circle'
    SIZE 6
  END
END

Please, help me... and sorry if my english is bad...
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