mirror of
https://github.com/ClickHouse/ClickHouse.git
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77 lines
4.9 KiB
SQL
77 lines
4.9 KiB
SQL
SELECT 'Various intervals';
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SELECT dateDiff('year', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('year', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('year', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('quarter', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('quarter', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('quarter', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('month', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('month', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('month', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('week', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('week', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('week', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('day', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('day', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('day', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('hour', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('hour', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('hour', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('minute', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('minute', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('minute', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT dateDiff('second', toDate('2017-12-31'), toDate('2016-01-01'));
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SELECT dateDiff('second', toDate('2017-12-31'), toDate('2017-01-01'));
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SELECT dateDiff('second', toDate('2017-12-31'), toDate('2018-01-01'));
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SELECT 'Date and DateTime arguments';
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SELECT dateDiff('second', toDate('2017-12-31'), toDateTime('2016-01-01 00:00:00'));
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SELECT dateDiff('second', toDateTime('2017-12-31 00:00:00'), toDate('2017-01-01'));
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SELECT dateDiff('second', toDateTime('2017-12-31 00:00:00'), toDateTime('2018-01-01 00:00:00'));
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SELECT 'Constant and non-constant arguments';
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SELECT dateDiff('minute', materialize(toDate('2017-12-31')), toDate('2016-01-01'));
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SELECT dateDiff('minute', toDate('2017-12-31'), materialize(toDate('2017-01-01')));
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SELECT dateDiff('minute', materialize(toDate('2017-12-31')), materialize(toDate('2018-01-01')));
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SELECT 'Case insensitive';
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SELECT DATEDIFF('year', today(), today() - INTERVAL 10 YEAR);
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SELECT 'Dependance of timezones';
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SELECT dateDiff('month', toDate('2014-10-26'), toDate('2014-10-27'), 'Europe/Moscow');
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SELECT dateDiff('week', toDate('2014-10-26'), toDate('2014-10-27'), 'Europe/Moscow');
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SELECT dateDiff('day', toDate('2014-10-26'), toDate('2014-10-27'), 'Europe/Moscow');
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SELECT dateDiff('hour', toDate('2014-10-26'), toDate('2014-10-27'), 'Europe/Moscow');
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SELECT dateDiff('minute', toDate('2014-10-26'), toDate('2014-10-27'), 'Europe/Moscow');
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SELECT dateDiff('second', toDate('2014-10-26'), toDate('2014-10-27'), 'Europe/Moscow');
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SELECT dateDiff('month', toDate('2014-10-26'), toDate('2014-10-27'), 'UTC');
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SELECT dateDiff('week', toDate('2014-10-26'), toDate('2014-10-27'), 'UTC');
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SELECT dateDiff('day', toDate('2014-10-26'), toDate('2014-10-27'), 'UTC');
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SELECT dateDiff('hour', toDate('2014-10-26'), toDate('2014-10-27'), 'UTC');
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SELECT dateDiff('minute', toDate('2014-10-26'), toDate('2014-10-27'), 'UTC');
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SELECT dateDiff('second', toDate('2014-10-26'), toDate('2014-10-27'), 'UTC');
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SELECT dateDiff('month', toDateTime('2014-10-26 00:00:00', 'Europe/Moscow'), toDateTime('2014-10-27 00:00:00', 'Europe/Moscow'));
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SELECT dateDiff('week', toDateTime('2014-10-26 00:00:00', 'Europe/Moscow'), toDateTime('2014-10-27 00:00:00', 'Europe/Moscow'));
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SELECT dateDiff('day', toDateTime('2014-10-26 00:00:00', 'Europe/Moscow'), toDateTime('2014-10-27 00:00:00', 'Europe/Moscow'));
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SELECT dateDiff('hour', toDateTime('2014-10-26 00:00:00', 'Europe/Moscow'), toDateTime('2014-10-27 00:00:00', 'Europe/Moscow'));
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SELECT dateDiff('minute', toDateTime('2014-10-26 00:00:00', 'Europe/Moscow'), toDateTime('2014-10-27 00:00:00', 'Europe/Moscow'));
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SELECT dateDiff('second', toDateTime('2014-10-26 00:00:00', 'Europe/Moscow'), toDateTime('2014-10-27 00:00:00', 'Europe/Moscow'));
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SELECT dateDiff('month', toDateTime('2014-10-26 00:00:00', 'UTC'), toDateTime('2014-10-27 00:00:00', 'UTC'));
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SELECT dateDiff('week', toDateTime('2014-10-26 00:00:00', 'UTC'), toDateTime('2014-10-27 00:00:00', 'UTC'));
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SELECT dateDiff('day', toDateTime('2014-10-26 00:00:00', 'UTC'), toDateTime('2014-10-27 00:00:00', 'UTC'));
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SELECT dateDiff('hour', toDateTime('2014-10-26 00:00:00', 'UTC'), toDateTime('2014-10-27 00:00:00', 'UTC'));
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SELECT dateDiff('minute', toDateTime('2014-10-26 00:00:00', 'UTC'), toDateTime('2014-10-27 00:00:00', 'UTC'));
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SELECT dateDiff('second', toDateTime('2014-10-26 00:00:00', 'UTC'), toDateTime('2014-10-27 00:00:00', 'UTC'));
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SELECT 'Additional test';
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SELECT number = dateDiff('month', now() - INTERVAL number MONTH, now()) FROM system.numbers LIMIT 10;
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