mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-26 11:48:52 +03:00
66 lines
2.4 KiB
Plaintext
66 lines
2.4 KiB
Plaintext
DROP DATABASE IF EXISTS mcs178_db;
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CREATE DATABASE mcs178_db;
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USE mcs178_db;
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SET default_storage_engine=Columnstore;
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CREATE TABLE t1 (a CHAR(1), b INT, c DATETIME, d DOUBLE);
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INSERT INTO t1 VALUES ('', NULL, '0-0-0', NULL),('a', 12, '1212-12-12', 1.19691E+100),('b', 13, '1313-3-13 13:13:13', 2.1961E+18),('c', 14, '1414-4-14', 0.16191),('d', 15, '2015-5-15 15:15:15', 1.971917);
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SHOW CREATE TABLE t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` char(1) DEFAULT NULL,
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`b` int(11) DEFAULT NULL,
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`c` datetime DEFAULT NULL,
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`d` double DEFAULT NULL
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) ENGINE=Columnstore DEFAULT CHARSET=latin1
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SELECT ADDDATE('2020-02-02 22:22:22', 1);
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ADDDATE('2020-02-02 22:22:22', 1)
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2020-02-03 22:22:22
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SELECT ADDDATE('2020-02-02 22:22:22', INTERVAL 1 DAY);
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ADDDATE('2020-02-02 22:22:22', INTERVAL 1 DAY)
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2020-02-03 22:22:22
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SELECT ADDDATE('2020-02-02 22:22:22', INTERVAL 1 HOUR);
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ADDDATE('2020-02-02 22:22:22', INTERVAL 1 HOUR)
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2020-02-02 23:22:22
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SELECT ADDDATE('2020-02-02 22:22:22', INTERVAL 1 MINUTE);
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ADDDATE('2020-02-02 22:22:22', INTERVAL 1 MINUTE)
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2020-02-02 22:23:22
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SELECT ADDDATE('2020-02-02 22:22:22', INTERVAL -1 SECOND);
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ADDDATE('2020-02-02 22:22:22', INTERVAL -1 SECOND)
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2020-02-02 22:22:21
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SELECT c, ADDDATE(c, 1) FROM t1;
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c ADDDATE(c, 1)
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0000-00-00 00:00:00 NULL
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1212-12-12 00:00:00 1212-12-13 00:00:00
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1313-03-13 13:13:13 1313-03-14 13:13:13
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1414-04-14 00:00:00 1414-04-15 00:00:00
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2015-05-15 15:15:15 2015-05-16 15:15:15
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SELECT c, ADDDATE(c, -2) FROM t1;
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c ADDDATE(c, -2)
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0000-00-00 00:00:00 NULL
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1212-12-12 00:00:00 1212-12-10 00:00:00
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1313-03-13 13:13:13 1313-03-11 13:13:13
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1414-04-14 00:00:00 1414-04-12 00:00:00
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2015-05-15 15:15:15 2015-05-13 15:15:15
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SELECT c, ADDDATE(c, INTERVAL -1 HOUR) FROM t1;
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c ADDDATE(c, INTERVAL -1 HOUR)
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0000-00-00 00:00:00 NULL
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1212-12-12 00:00:00 1212-12-11 23:00:00
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1313-03-13 13:13:13 1313-03-13 12:13:13
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1414-04-14 00:00:00 1414-04-13 23:00:00
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2015-05-15 15:15:15 2015-05-15 14:15:15
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SELECT c, ADDDATE(c, INTERVAL 1 MINUTE) FROM t1;
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c ADDDATE(c, INTERVAL 1 MINUTE)
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0000-00-00 00:00:00 NULL
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1212-12-12 00:00:00 1212-12-12 00:01:00
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1313-03-13 13:13:13 1313-03-13 13:14:13
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1414-04-14 00:00:00 1414-04-14 00:01:00
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2015-05-15 15:15:15 2015-05-15 15:16:15
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SELECT c, ADDDATE(c, INTERVAL 1 SECOND) FROM t1;
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c ADDDATE(c, INTERVAL 1 SECOND)
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0000-00-00 00:00:00 NULL
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1212-12-12 00:00:00 1212-12-12 00:00:01
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1313-03-13 13:13:13 1313-03-13 13:13:14
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1414-04-14 00:00:00 1414-04-14 00:00:01
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2015-05-15 15:15:15 2015-05-15 15:15:16
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DROP DATABASE mcs178_db;
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