"GroupAggregate (cost=265935.63..285867.54 rows=137462 width=26)"
" Filter: (count(*) > 1)"
" -> Sort (cost=265935.63..269372.16 rows=1374614 width=26)"
" Sort Key: latitude_decimal, longitude_decimal"
" -> Seq Scan on temp_city (cost=0.00..27121.14 rows=1374614 width=26)"