Upon reading sequence TABLE_STATISTICS counts the row both as inserted and updated

commit 91ab42a823b244a3d4b051ab79701b7a552f274a

Author: Monty

Date:   Tue Jan 28 23:23:51 2020 +0200

    Clean up and speed up interfaces for binary row logging

set @userstat.save= @@userstat;

set global userstat= 1;

create sequence s;

flush table_statistics;

select nextval(s);

query_vertical show table_statistics;

# Cleanup

drop table s;

set global userstat= @userstat.save;

flush table_statistics;

select nextval(s);

nextval(s)

1

show table_statistics;

Table_schema	test

Table_name	s

Rows_read	0

Rows_changed	2

Rows_changed_x_#indexes	2