elasticsearch/docs/reference/query-languages/esql/_snippets/commands/examples/stats.csv-spec/docsStatsByExpression.md

% This is generated by ESQL's AbstractFunctionTestCase. Do not edit it. See ../README.md for how to regenerate it.

FROM employees
| STATS my_count = COUNT() BY LEFT(last_name, 1)
| SORT `LEFT(last_name, 1)`

my_count:long	LEFT(last_name, 1):keyword
2	A
11	B
5	C
5	D
2	E
4	F
4	G
6	H
2	J
3	K
5	L
12	M
4	N
1	O
7	P
5	R
13	S
4	T
2	W
3	Z