                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2855.056..2855.057 rows=1.00 loops=1)
   Buffers: shared hit=94 read=344734
   I/O Timings: shared read=17.185
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.113..1752.665 rows=20000000.00 loops=1)
         Buffers: shared hit=94 read=344734
         I/O Timings: shared read=17.185
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.276 ms
 Execution Time: 2855.137 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2753.341..2753.342 rows=1.00 loops=1)
   Buffers: shared hit=188 read=344640
   I/O Timings: shared read=14.367
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.107..1643.099 rows=20000000.00 loops=1)
         Buffers: shared hit=188 read=344640
         I/O Timings: shared read=14.367
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.182 ms
 Execution Time: 2753.410 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2826.358..2826.360 rows=1.00 loops=1)
   Buffers: shared hit=282 read=344546
   I/O Timings: shared read=17.382
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.133..1725.492 rows=20000000.00 loops=1)
         Buffers: shared hit=282 read=344546
         I/O Timings: shared read=17.382
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.218 ms
 Execution Time: 2826.431 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=2772.035..2772.036 rows=1.00 loops=1)
   Buffers: shared hit=376 read=344452
   I/O Timings: shared read=17.588
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.192..1691.882 rows=20000000.00 loops=1)
         Buffers: shared hit=376 read=344452
         I/O Timings: shared read=17.588
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.216 ms
 Execution Time: 2772.104 ms
(10 rows)

                                                             QUERY PLAN                                                             
------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=594828.30..594828.31 rows=1 width=8) (actual time=3135.438..3135.440 rows=1.00 loops=1)
   Buffers: shared hit=470 read=344358
   I/O Timings: shared read=23.693
   ->  Seq Scan on large_table  (cost=0.00..544828.24 rows=20000024 width=0) (actual time=0.202..2004.215 rows=20000000.00 loops=1)
         Buffers: shared hit=470 read=344358
         I/O Timings: shared read=23.693
 Planning:
   Buffers: shared hit=50
 Planning Time: 0.330 ms
 Execution Time: 3135.541 ms
(10 rows)

