CREATE TABLE demo(host string, cpu double, memory double, ts TIMESTAMP time index);

insert into 
    demo(host, cpu, memory, ts) 
values 
    ('host1', 66.6, 1024, 1655276557000), 
    ('host2', 88.8,  333.3, 1655276558000),
    ('host3', 99.9, 444.4, 1722077263000);

Copy demo TO '${SQLNESS_HOME}/demo/export/json/demo.json' with (format='json');

CREATE TABLE with_filename(host string, cpu double, memory double, ts timestamp time index);

Copy with_filename FROM '${SQLNESS_HOME}/demo/export/json/demo.json' with (format='json', start_time='2022-06-15 07:02:37', end_time='2022-06-15 07:02:39');

select * from with_filename order by ts;

CREATE TABLE with_path(host string, cpu double, memory double, ts timestamp time index);

Copy with_path FROM '${SQLNESS_HOME}/demo/export/json/' with (format='json', start_time='2022-06-15 07:02:37', end_time='2022-06-15 07:02:39');

select * from with_path order by ts;

CREATE TABLE with_pattern(host string, cpu double, memory double, ts timestamp time index);

Copy with_pattern FROM '${SQLNESS_HOME}/demo/export/json/' WITH (pattern = 'demo.*',format='json', end_time='2022-06-15 07:02:39');

select * from with_pattern order by ts;

drop table demo;

drop table with_filename;

drop table with_path;

drop table with_pattern;