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17 lines
528 B
Plaintext
17 lines
528 B
Plaintext
DROP DATABASE IF EXISTS mcol_5237;
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CREATE DATABASE mcol_5237;
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USE mcol_5237;
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create table t1 (a varchar(1000), b datetime, c int) ENGINE=Columnstore DEFAULT CHARSET=utf8;
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insert into t1 values
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('abc', null, 1),
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('xyz', str_to_date('2022-09-22 00:00:00', '%Y-%m-%d %H:%i:%s'), 1);
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create view v1 as
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select a, NVL(b, str_to_date('1970-01-01 00:00:00', '%Y-%m-%d %H:%i:%s')) as b, c from t1;
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select count(*) from v1 where YEAR(b) = 2022;
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count(*)
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1
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select count(*) from v1 where YEAR(b) = 1970;
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count(*)
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1
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DROP DATABASE mcol_5237;
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