add_index "gps_points", ["latitude", "longitude"], :name => "points_idx"
remove_index "gps_points", :name => "points_tile_idx"
remove_column "gps_points", "tile"
add_index "gps_points", ["latitude", "longitude"], :name => "points_idx"
remove_index "gps_points", :name => "points_tile_idx"
remove_column "gps_points", "tile"