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45 lines
4.1 KiB
SQL
45 lines
4.1 KiB
SQL
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/* Test the DST(daylight saving time) offset changing boundary*/
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SELECT 'DST boundary test for Europe/Moscow:';
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SELECT number,(toDateTime('1981-04-01 22:40:00', 'Europe/Moscow') + INTERVAL number * 600 SECOND) AS k, timezoneOffset(k) AS t, toUnixTimestamp(k) as s FROM numbers(4);
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SELECT number,(toDateTime('1981-09-30 23:00:00', 'Europe/Moscow') + INTERVAL number * 600 SECOND) AS k, timezoneOffset(k) AS t, toUnixTimestamp(k) as s FROM numbers(18);
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SELECT 'DST boundary test for Asia/Tehran:';
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SELECT number,(toDateTime('2020-03-21 22:40:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS k, timezoneOffset(k) AS t, toUnixTimestamp(k) as s FROM numbers(4);
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SELECT number,(toDateTime('2020-09-20 23:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS k, timezoneOffset(k) AS t, toUnixTimestamp(k) as s FROM numbers(18);
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SELECT 'DST boundary test for Australia/Lord_Howe. This is a special timezone with DST offset is 30mins with the timezone epoc also lays at half hour';
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SELECT timezoneOffset(toDateTime('2018-08-21 22:20:00', 'Australia/Lord_Howe'));
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SELECT timezoneOffset(toDateTime('2018-02-21 22:20:00', 'Australia/Lord_Howe'));
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SELECT 'DST boundary test for Australia/Lord_Howe:';
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SELECT number,(toDateTime('2020-10-04 01:40:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS k, timezoneOffset(k) AS t, toUnixTimestamp(k) as s FROM numbers(4);
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SELECT number,(toDateTime('2019-04-07 01:00:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS k, timezoneOffset(k) AS t, toUnixTimestamp(k) as s FROM numbers(18);
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/* The Batch Part. Test period is whole 4 days*/
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SELECT '4 days test in batch comparing with manually computation result for Europe/Moscow:';
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SELECT toUnixTimestamp(x) as tt, (toDateTime('1981-04-01 00:00:00', 'Europe/Moscow') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
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SELECT toUnixTimestamp(x) as tt, (toDateTime('1981-09-30 00:00:00', 'Europe/Moscow') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
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SELECT '4 days test in batch comparing with manually computation result for Asia/Tehran:';
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SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-03-21 00:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
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SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-09-20 00:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
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SELECT '4 days test in batch comparing with manually computation result for Australia/Lord_Howe';
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SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-10-04 01:40:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(18) where res != calc;
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SELECT toUnixTimestamp(x) as tt, (toDateTime('2019-04-07 01:00:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(18) where res != calc;
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/* Find all the years had followed DST during given period*/
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SELECT 'Moscow DST Years:';
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SELECT number, (toDateTime('1970-06-01 00:00:00', 'Europe/Moscow') + INTERVAL number YEAR) AS DST_Y, timezoneOffset(DST_Y) AS t FROM numbers(51) where t != 10800;
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SELECT 'Moscow DST Years with perment DST from 2011-2014:';
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SELECT min((toDateTime('2011-01-01 00:00:00', 'Europe/Moscow') + INTERVAL number DAY) as day) as start, max(day) as end, count(1), concat(toString(toYear(day)),'_',toString(timezoneOffset(day)))as DST from numbers(365*4+1) group by DST order by start;
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SELECT 'Tehran DST Years:';
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SELECT number, (toDateTime('1970-06-01 00:00:00', 'Asia/Tehran') + INTERVAL number YEAR) AS DST_Y, timezoneOffset(DST_Y) AS t FROM numbers(51) where t != 12600;
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SELECT 'Shanghai DST Years:';
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SELECT number, (toDateTime('1970-08-01 00:00:00', 'Asia/Shanghai') + INTERVAL number YEAR) AS DST_Y, timezoneOffset(DST_Y) AS t FROM numbers(51) where t != 28800;
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