                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2719.881..2719.883 rows=1.00 loops=1)
   Buffers: shared hit=538 read=344290
   I/O Timings: shared read=14.079
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.148..1644.862 rows=20000000.00 loops=1)
         Buffers: shared hit=538 read=344290
         I/O Timings: shared read=14.079
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.262 ms
 Execution Time: 2719.971 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2770.021..2770.023 rows=1.00 loops=1)
   Buffers: shared hit=632 read=344196
   I/O Timings: shared read=15.874
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.110..1693.930 rows=20000000.00 loops=1)
         Buffers: shared hit=632 read=344196
         I/O Timings: shared read=15.874
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.251 ms
 Execution Time: 2770.082 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2697.174..2697.176 rows=1.00 loops=1)
   Buffers: shared hit=726 read=344102
   I/O Timings: shared read=13.959
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.123..1628.246 rows=20000000.00 loops=1)
         Buffers: shared hit=726 read=344102
         I/O Timings: shared read=13.959
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.270 ms
 Execution Time: 2697.245 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2610.866..2610.867 rows=1.00 loops=1)
   Buffers: shared hit=820 read=344008
   I/O Timings: shared read=10.254
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.129..1523.469 rows=20000000.00 loops=1)
         Buffers: shared hit=820 read=344008
         I/O Timings: shared read=10.254
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.235 ms
 Execution Time: 2610.932 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2662.088..2662.089 rows=1.00 loops=1)
   Buffers: shared hit=914 read=343914
   I/O Timings: shared read=10.505
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.121..1585.546 rows=20000000.00 loops=1)
         Buffers: shared hit=914 read=343914
         I/O Timings: shared read=10.505
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.217 ms
 Execution Time: 2662.142 ms
(10 rows)

