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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-20 09:07:44 +03:00
36 lines
936 B
Plaintext
36 lines
936 B
Plaintext
DROP DATABASE IF EXISTS mcs284_db;
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CREATE DATABASE mcs284_db;
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USE mcs284_db;
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CREATE TABLE t1
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(
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t1_DATE DATE,
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t1_TIME TIME,
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t1_DATETIME DATETIME
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)ENGINE=Columnstore;
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INSERT INTO t1 VALUES('1991-05-30', '01:00:50', '2020-12-11 06:08:59');
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INSERT INTO t1 VALUES('2991-10-13', '21:19:52', '1987-01-01 17:28:37');
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SELECT HOUR('2020-02-21') FROM t1 LIMIT 1;
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HOUR('2020-02-21')
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0
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Warnings:
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Warning 1292 Truncated incorrect time value: '2020-02-21'
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SELECT HOUR('11:12:13') FROM t1 LIMIT 1;
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HOUR('11:12:13')
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11
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SELECT HOUR('2020/02/11 13:12:13') FROM t1 LIMIT 1;
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HOUR('2020/02/11 13:12:13')
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13
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SELECT t1_DATE, HOUR(t1_DATE) FROM t1 ORDER BY 1;
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t1_DATE HOUR(t1_DATE)
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1991-05-30 0
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2991-10-13 0
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SELECT t1_DATETIME, HOUR(t1_DATETIME) FROM t1 ORDER BY 1;
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t1_DATETIME HOUR(t1_DATETIME)
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1987-01-01 17:28:37 17
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2020-12-11 06:08:59 6
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SELECT t1_TIME, HOUR(t1_TIME) FROM t1 ORDER BY 1;
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t1_TIME HOUR(t1_TIME)
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01:00:50 1
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21:19:52 21
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DROP DATABASE mcs284_db;
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