50 lines
2.8 KiB
SQL
50 lines
2.8 KiB
SQL
DROP TABLE IF EXISTS schema_change_update_regression_test;
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CREATE TABLE schema_change_update_regression_test (
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`user_id` LARGEINT NOT NULL COMMENT "用户id",
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`date` DATE NOT NULL COMMENT "数据灌入日期时间",
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`city` VARCHAR(20) COMMENT "用户所在城市",
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`age` SMALLINT COMMENT "用户年龄",
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`sex` TINYINT COMMENT "用户性别",
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`last_visit_date` DATETIME DEFAULT "1970-01-01 00:00:00" COMMENT "用户最后一次访问时间",
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`last_update_date` DATETIME DEFAULT "1970-01-01 00:00:00" COMMENT "用户最后一次更新时间",
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`last_visit_date_not_null` DATETIME NOT NULL DEFAULT "1970-01-01 00:00:00" COMMENT "用户最后一次访问时间",
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`cost` BIGINT DEFAULT "0" COMMENT "用户总消费",
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`max_dwell_time` INT DEFAULT "0" COMMENT "用户最大停留时间",
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`min_dwell_time` INT DEFAULT "99999" COMMENT "用户最小停留时间")
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UNIQUE KEY(`user_id`, `date`, `city`, `age`, `sex`) DISTRIBUTED BY HASH(`user_id`)
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PROPERTIES ( "replication_num" = "1" , "light_schema_change" = "true");
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INSERT INTO schema_change_update_regression_test VALUES
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(1, '2017-10-01', 'Beijing', 10, 1, '2020-01-01', '2020-01-01', '2020-01-01', 1, 30, 20);
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INSERT INTO schema_change_update_regression_test VALUES
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(2, '2017-10-01', 'Beijing', 10, 1, '2020-01-02', '2020-01-02', '2020-01-02', 1, 31, 21);
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SELECT * FROM schema_change_update_regression_test order by user_id ASC, last_visit_date;
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ALTER table schema_change_update_regression_test ADD COLUMN new_column INT default "1";
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SELECT * FROM schema_change_update_regression_test order by user_id DESC, last_visit_date;
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UPDATE schema_change_update_regression_test set new_column = 2 where user_id = 1;
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SELECT * FROM schema_change_update_regression_test order by user_id ASC, last_visit_date;
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INSERT INTO schema_change_update_regression_test VALUES
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(3, '2017-10-01', 'Beijing', 10, 1, '2020-01-01', '2020-01-01', '2020-01-01', 1, 30, 20, 2);
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INSERT INTO schema_change_update_regression_test VALUES
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(5, '2017-10-01', 'Beijing', 10, 1, '2020-01-02', '2020-01-02', '2020-01-02', 1, 31, 21, 20);
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UPDATE schema_change_update_regression_test set new_column = 20 where new_column = 2;
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SELECT * FROM schema_change_update_regression_test order by user_id DESC, last_visit_date;
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ALTER TABLE schema_change_update_regression_test DROP COLUMN new_column;
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SELECT * FROM schema_change_update_regression_test order by user_id DESC, last_visit_date;
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UPDATE schema_change_update_regression_test set cost = 20 where user_id = 5;
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SELECT * FROM schema_change_update_regression_test order by user_id DESC, last_visit_date; |