sql: humanize counts and durations in EXPLAIN ANALYZE

[RaduBerinde]

This change humanizes all statistics showed in EXPLAIN and EXPLAIN
ANALYZE (both the text and the diagram):

• byte values were already humanized
• row counts are shown with commas (e.g. 1,000,000);
• durations are rounded out in a more friendly way. Most importantly,
  we no longer show a lot of decimals for multi-second times, and the
  zero value is now shown as "0µs" instead of "0s" (the latter can be
  confusing, e.g. is it hiding a 100ms time?).

Release note (sql change): EXPLAIN and EXPLAIN ANALYZE now show counts
and durations in a more user-friendly way.

[cockroach-teamcity]

This change is 

[rytaft]

Reviewed 47 of 47 files at r1.
Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @asubiotto and @RaduBerinde)

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pkg/sql/execinfrapb/component_stats.go, line 57 at r1 (raw file):

	}
	if s.NetRx.TuplesReceived.HasValue() {
		fn("network tuples received", humanize.Comma(int64(s.NetRx.TuplesReceived.Value())))

[nit] what do you think about adding a function humanizeutil.Count that calls humanize.Comma? That would be more consistent with humanizeutil.Duration.

---

pkg/util/humanizeutil/duration_test.go, line 25 at r1 (raw file):

		{val: 0, exp: "0µs"},
		{val: 12, exp: "0µs"},
		{val: 1234, exp: "1µs"},

What about checking that 501 rounds up to 1 microsecond?

[RaduBerinde]

TFTR!

Reviewable status: complete! 1 of 0 LGTMs obtained (waiting on @asubiotto and @rytaft)

---

pkg/sql/execinfrapb/component_stats.go, line 57 at r1 (raw file):

Previously, rytaft (Rebecca Taft) wrote…

[nit] what do you think about adding a function humanizeutil.Count that calls humanize.Comma? That would be more consistent with humanizeutil.Duration.

Done.

---

pkg/util/humanizeutil/duration_test.go, line 25 at r1 (raw file):

Previously, rytaft (Rebecca Taft) wrote…

What about checking that 501 rounds up to 1 microsecond?

Done.

[rytaft]

Reviewed 8 of 8 files at r2.
Reviewable status: complete! 0 of 0 LGTMs obtained (and 1 stale) (waiting on @asubiotto and @RaduBerinde)

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pkg/util/humanizeutil/count.go, line 15 at r2 (raw file):

import "github.com/dustin/go-humanize"

// Count formats a unitless iteger value like a row count. It uses separating

[nit] iteger -> integer

[RaduBerinde]

bors r+

[craig]

Build succeeded:

• GitHub CI (Cockroach)