mirror of
https://github.com/GreptimeTeam/greptimedb.git
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0d4f27a699
* fix: convert JSON type to JSON string in COPY TABLE TO statement * chore: apply suggestions from CR * chore: apply suggestions from CR
71 lines
2.5 KiB
SQL
71 lines
2.5 KiB
SQL
CREATE TABLE demo(host string, cpu double, memory double, jsons JSON, ts TIMESTAMP time index);
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insert into
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demo(host, cpu, memory, jsons, ts)
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values
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('host1', 66.6, 1024, '{"foo":"bar"}', 1655276557000),
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('host2', 88.8, 333.3, '{"a":null,"foo":"bar"}', 1655276558000);
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insert into
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demo(host, cpu, memory, ts)
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values
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('host3', 99.9, 444.4, 1722077263000);
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Copy demo TO '${SQLNESS_HOME}/demo/export/json/demo.json' with (format='json');
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CREATE TABLE with_filename(host string, cpu double, memory double, ts timestamp time index);
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Copy with_filename FROM '${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');
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select * from with_filename order by ts;
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CREATE TABLE with_json(host string, cpu double, memory double, jsons JSON, ts timestamp time index);
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Copy with_json FROM '${SQLNESS_HOME}/demo/export/json/demo.json' with (format='json');
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select host, cpu, memory, json_to_string(jsons), ts from with_json order by ts;
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-- SQLNESS PROTOCOL MYSQL
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select host, cpu, memory, jsons, ts from demo where host != 'host3';
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-- SQLNESS PROTOCOL POSTGRES
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select host, cpu, memory, jsons, ts from demo where host != 'host3';
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CREATE TABLE with_path(host string, cpu double, memory double, ts timestamp time index);
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Copy with_path FROM '${SQLNESS_HOME}/demo/export/json/' with (format='json', start_time='2022-06-15 07:02:37', end_time='2022-06-15 07:02:39');
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select * from with_path order by ts;
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CREATE TABLE with_pattern(host string, cpu double, memory double, ts timestamp time index);
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Copy with_pattern FROM '${SQLNESS_HOME}/demo/export/json/' WITH (pattern = 'demo.*',format='json', end_time='2022-06-15 07:02:39');
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select * from with_pattern order by ts;
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CREATE TABLE demo_with_external_column(host string, cpu double, memory double, ts timestamp time index, external_column string default 'default_value');
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Copy demo_with_external_column FROM '${SQLNESS_HOME}/demo/export/json/demo.json' WITH (format='json');
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select * from demo_with_external_column order by ts;
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CREATE TABLE demo_with_less_columns(host string, memory double, ts timestamp time index);
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Copy demo_with_less_columns FROM '${SQLNESS_HOME}/demo/export/json/demo.json' WITH (format='json');
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select * from demo_with_less_columns order by ts;
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drop table demo;
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drop table with_filename;
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drop table with_json;
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drop table with_path;
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drop table with_pattern;
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drop table demo_with_external_column;
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drop table demo_with_less_columns;
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