mirror of
https://github.com/GreptimeTeam/greptimedb.git
synced 2026-06-03 22:00:38 +00:00
121 lines
3.2 KiB
Plaintext
121 lines
3.2 KiB
Plaintext
create table if not exists last_non_null_table(
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host string,
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ts timestamp,
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cpu double,
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memory double,
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TIME INDEX (ts),
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PRIMARY KEY(host)
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)
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engine=mito
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with('merge_mode'='last_non_null');
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Affected Rows: 0
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INSERT INTO last_non_null_table VALUES ('host1', 0, 0, NULL), ('host2', 1, NULL, 1);
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Affected Rows: 2
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INSERT INTO last_non_null_table VALUES ('host1', 0, NULL, 10), ('host2', 1, 11, NULL);
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Affected Rows: 2
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SELECT * from last_non_null_table ORDER BY host, ts;
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+-------+-------------------------+------+--------+
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| host | ts | cpu | memory |
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+-------+-------------------------+------+--------+
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| host1 | 1970-01-01T00:00:00 | 0.0 | 10.0 |
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| host2 | 1970-01-01T00:00:00.001 | 11.0 | 1.0 |
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+-------+-------------------------+------+--------+
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INSERT INTO last_non_null_table VALUES ('host1', 0, 20, NULL);
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Affected Rows: 1
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SELECT * from last_non_null_table ORDER BY host, ts;
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+-------+-------------------------+------+--------+
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| host | ts | cpu | memory |
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+-------+-------------------------+------+--------+
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| host1 | 1970-01-01T00:00:00 | 20.0 | 10.0 |
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| host2 | 1970-01-01T00:00:00.001 | 11.0 | 1.0 |
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+-------+-------------------------+------+--------+
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INSERT INTO last_non_null_table VALUES ('host1', 0, NULL, NULL);
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Affected Rows: 1
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SELECT * from last_non_null_table ORDER BY host, ts;
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+-------+-------------------------+------+--------+
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| host | ts | cpu | memory |
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+-------+-------------------------+------+--------+
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| host1 | 1970-01-01T00:00:00 | 20.0 | 10.0 |
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| host2 | 1970-01-01T00:00:00.001 | 11.0 | 1.0 |
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+-------+-------------------------+------+--------+
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DROP TABLE last_non_null_table;
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Affected Rows: 0
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create table if not exists last_row_table(
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host string,
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ts timestamp,
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cpu double,
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memory double,
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TIME INDEX (ts),
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PRIMARY KEY(host)
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)
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engine=mito
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with('merge_mode'='last_row');
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Affected Rows: 0
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INSERT INTO last_row_table VALUES ('host1', 0, 0, NULL), ('host2', 1, NULL, 1);
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Affected Rows: 2
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INSERT INTO last_row_table VALUES ('host1', 0, NULL, 10), ('host2', 1, 11, NULL);
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Affected Rows: 2
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SELECT * from last_row_table ORDER BY host, ts;
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+-------+-------------------------+------+--------+
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| host | ts | cpu | memory |
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+-------+-------------------------+------+--------+
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| host1 | 1970-01-01T00:00:00 | | 10.0 |
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| host2 | 1970-01-01T00:00:00.001 | 11.0 | |
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+-------+-------------------------+------+--------+
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DROP TABLE last_row_table;
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Affected Rows: 0
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create table if not exists invalid_merge_mode(
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host string,
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ts timestamp,
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cpu double,
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memory double,
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TIME INDEX (ts),
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PRIMARY KEY(host)
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)
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engine=mito
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with('merge_mode'='first_row');
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Error: 1004(InvalidArguments), Invalid options: Matching variant not found at line 1 column 25
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create table if not exists invalid_merge_mode(
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host string,
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ts timestamp,
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cpu double,
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memory double,
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TIME INDEX (ts),
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PRIMARY KEY(host)
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)
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engine=mito
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with('merge_mode'='last_non_null', 'append_mode'='true');
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Error: 1004(InvalidArguments), Invalid region options, merge_mode is not allowed when append_mode is enabled
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