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28 lines
802 B
Plaintext
28 lines
802 B
Plaintext
DROP DATABASE IF EXISTS mcs232_db;
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CREATE DATABASE mcs232_db;
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USE mcs232_db;
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CREATE TABLE t1(t1_d DATE, t1_t TIME, t1_dt DATETIME)ENGINE=Columnstore;
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INSERT INTO t1 VALUES(NULL, NULL, NULL);
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INSERT INTO t1 VALUES('2222-11-11', '12:12:12', '2020-11-11 12:12:12');
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INSERT INTO t1 VALUES('2020-01-01', '11:37:21', '2020-12-31 12:34:56');
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INSERT INTO t1 VALUES('2016-02-01', '03:41:19', '2017-02-01 12:12:12');
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SELECT t1_d, SECOND(t1_d) FROM t1 ORDER BY 1;
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t1_d SECOND(t1_d)
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NULL NULL
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2016-02-01 0
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2020-01-01 0
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2222-11-11 0
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SELECT t1_t, SECOND(t1_t) FROM t1 ORDER BY 1;
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t1_t SECOND(t1_t)
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NULL NULL
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03:41:19 19
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11:37:21 21
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12:12:12 12
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SELECT t1_dt, SECOND(t1_dt) FROM t1 ORDER BY 1;
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t1_dt SECOND(t1_dt)
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NULL NULL
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2017-02-01 12:12:12 12
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2020-11-11 12:12:12 12
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2020-12-31 12:34:56 56
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DROP DATABASE mcs232_db;
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