CREATE TABLE monitor ( host STRING, ts TIMESTAMP, cpu DOUBLE DEFAULT 0, memory DOUBLE, TIME INDEX (ts), PRIMARY KEY(host)) ;

Affected Rows: 0

insert into monitor(host, cpu, memory, ts) values ('host1', 66.6, 1024, 1655276557000), ('host2', 77.7,  2048, 1655276558000), ('host3', 88.8,  3072, 1655276559000);

Affected Rows: 3

select * from monitor;

+-------+---------------------+------+--------+
| host  | ts                  | cpu  | memory |
+-------+---------------------+------+--------+
| host1 | 2022-06-15T07:02:37 | 66.6 | 1024.0 |
| host2 | 2022-06-15T07:02:38 | 77.7 | 2048.0 |
| host3 | 2022-06-15T07:02:39 | 88.8 | 3072.0 |
+-------+---------------------+------+--------+

delete from monitor where host = 'host1' and ts = 1655276557000;

Affected Rows: 1

select * from monitor;

+-------+---------------------+------+--------+
| host  | ts                  | cpu  | memory |
+-------+---------------------+------+--------+
| host2 | 2022-06-15T07:02:38 | 77.7 | 2048.0 |
| host3 | 2022-06-15T07:02:39 | 88.8 | 3072.0 |
+-------+---------------------+------+--------+

drop table monitor;

Affected Rows: 1