Minor enhancements to `EXPLAIN ANALYZE` output formatting

[2010YOUY01]

Is your feature request related to a problem or challenge?

Here are several minor items to make EXPLAIN ANALYZE display nicer:

• Format large numeric values with human-readable units (e.g., 10100 → 10.1 K, 1532000 → 1.53 M)
• Round time durations to two decimal places (e.g., elapsed_compute=11.295377 ms → 11.30 ms)

Demo(in datafusion-cli)

> explain analyze
select *
from generate_series(10000000) as t1(v1)
where v1 > 100;
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| plan_type         | plan                                                                                                                                                                                                                                                                                                      |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Plan with Metrics | ProjectionExec: expr=[value@0 as v1], metrics=[output_rows=9999900, elapsed_compute=213.26µs, output_bytes=76.3 MB, output_batches=1221]                                                                                                                                                                  |
|                   |   CoalesceBatchesExec: target_batch_size=8192, metrics=[output_rows=9999900, elapsed_compute=69.983µs, output_bytes=76.3 MB, output_batches=1221]                                                                                                                                                         |
|                   |     FilterExec: value@0 > 100, metrics=[output_rows=9999900, elapsed_compute=4.263662ms, output_bytes=76.3 MB, output_batches=1221, selectivity=100% (9999900/10000001)]                                                                                                                                  |
|                   |       RepartitionExec: partitioning=RoundRobinBatch(14), input_partitions=1, metrics=[output_rows=10000001, elapsed_compute=451.452µs, output_bytes=76.3 MB, output_batches=1221, spill_count=0, spilled_bytes=0.0 B, spilled_rows=0, fetch_time=11.416792ms, repartition_time=1ns, send_time=1.382266ms] |
|                   |         LazyMemoryExec: partitions=1, batch_generators=[generate_series: start=0, end=10000000, batch_size=8192], metrics=[output_rows=10000001, elapsed_compute=11.295377ms, output_bytes=76.3 MB, output_batches=1221]                                                                                  |
|                   |                                                                                                                                                                                                                                                                                                           |
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row(s) fetched.
Elapsed 0.017 seconds.

From the demo output, I think output_rows, and the ratio numerator and denominator is applicable. e.g. output_rows = 1.31 M, and selectivity = 15% (15.11k / 100.32k), and all time measurements can be rounded.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

[aaryyya]

Hey can i help on this one?

take