mirror of
https://github.com/GreptimeTeam/greptimedb.git
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bfc777e6ac
* fix: deletion between rows with the same key may not work * test: add sqlness test case * chore: comments
186 lines
5.0 KiB
Plaintext
186 lines
5.0 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 `delete_between` (
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`time` TIMESTAMP(0) NOT NULL,
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`code` STRING NULL,
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`name` STRING NULL,
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`status` TINYINT NULL,
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TIME INDEX (`time`),
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PRIMARY KEY (`code`)
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) ENGINE=mito WITH(
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merge_mode = 'last_non_null'
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);
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Affected Rows: 0
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INSERT INTO `delete_between` (`time`, `code`, `name`, `status`) VALUES ('2024-11-26 10:00:00', 'achn', '1.png', 0);
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Affected Rows: 1
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INSERT INTO `delete_between` (`time`, `code`, `name`, `status`) VALUES ('2024-11-26 10:01:00', 'achn', '2.png', 0);
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Affected Rows: 1
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INSERT INTO `delete_between` (`time`, `code`, `name`, `status`) VALUES ('2024-11-26 10:02:00', 'achn', '3.png', 1);
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Affected Rows: 1
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SELECT * FROM `delete_between`;
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+---------------------+------+-------+--------+
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| time | code | name | status |
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+---------------------+------+-------+--------+
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| 2024-11-26T10:00:00 | achn | 1.png | 0 |
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| 2024-11-26T10:01:00 | achn | 2.png | 0 |
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| 2024-11-26T10:02:00 | achn | 3.png | 1 |
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+---------------------+------+-------+--------+
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DELETE FROM `delete_between`;
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Affected Rows: 3
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INSERT INTO `delete_between` (`time`, `code`, `name`) VALUES ('2024-11-26 10:00:00', 'achn', '1.png');
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Affected Rows: 1
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INSERT INTO `delete_between` (`time`, `code`, `name`) VALUES ('2024-11-26 10:01:00', 'achn', '2.png');
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Affected Rows: 1
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INSERT INTO `delete_between` (`time`, `code`, `name`) VALUES ('2024-11-26 10:02:00', 'achn', '3.png');
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Affected Rows: 1
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SELECT * FROM `delete_between`;
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+---------------------+------+-------+--------+
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| time | code | name | status |
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+---------------------+------+-------+--------+
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| 2024-11-26T10:00:00 | achn | 1.png | |
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| 2024-11-26T10:01:00 | achn | 2.png | |
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| 2024-11-26T10:02:00 | achn | 3.png | |
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+---------------------+------+-------+--------+
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DROP TABLE `delete_between`;
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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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