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28a2cc0a82
* Family of functions to convert DateTime64 to Int64 and back, usefull for imporintg/exporting raw timestamp values of certain precision. * Docs * Tests * Fixed ya.make
64 lines
1.9 KiB
SQL
64 lines
1.9 KiB
SQL
WITH
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toDateTime64('2019-09-16 19:20:12.345678910', 3) AS dt64
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SELECT
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dt64,
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fromUnixTimestamp64Milli(toUnixTimestamp64Milli(dt64)),
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fromUnixTimestamp64Micro(toUnixTimestamp64Micro(dt64)),
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fromUnixTimestamp64Nano(toUnixTimestamp64Nano(dt64));
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WITH
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toDateTime64('2019-09-16 19:20:12.345678910', 6) AS dt64
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SELECT
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dt64,
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fromUnixTimestamp64Milli(toUnixTimestamp64Milli(dt64)),
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fromUnixTimestamp64Micro(toUnixTimestamp64Micro(dt64)),
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fromUnixTimestamp64Nano(toUnixTimestamp64Nano(dt64));
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WITH
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toDateTime64('2019-09-16 19:20:12.345678910', 9) AS dt64
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SELECT
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dt64,
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fromUnixTimestamp64Milli(toUnixTimestamp64Milli(dt64)),
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fromUnixTimestamp64Micro(toUnixTimestamp64Micro(dt64)),
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fromUnixTimestamp64Nano(toUnixTimestamp64Nano(dt64));
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SELECT 'with explicit timezone';
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WITH
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'UTC' as timezone,
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toDateTime64('2019-09-16 19:20:12.345678910', 3, timezone) AS dt64
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SELECT
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dt64,
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fromUnixTimestamp64Milli(toUnixTimestamp64Milli(dt64), timezone),
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fromUnixTimestamp64Micro(toUnixTimestamp64Micro(dt64), timezone),
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fromUnixTimestamp64Nano(toUnixTimestamp64Nano(dt64), timezone) AS v,
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toTypeName(v);
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WITH
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'Asia/Makassar' as timezone,
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toDateTime64('2019-09-16 19:20:12.345678910', 3, timezone) AS dt64
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SELECT
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dt64,
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fromUnixTimestamp64Milli(toUnixTimestamp64Milli(dt64), timezone),
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fromUnixTimestamp64Micro(toUnixTimestamp64Micro(dt64), timezone),
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fromUnixTimestamp64Nano(toUnixTimestamp64Nano(dt64), timezone) AS v,
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toTypeName(v);
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WITH
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CAST(1234567891011 AS Int64) AS val
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SELECT
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val,
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toUnixTimestamp64Milli(fromUnixTimestamp64Milli(val)),
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toUnixTimestamp64Micro(fromUnixTimestamp64Micro(val)),
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toUnixTimestamp64Nano(fromUnixTimestamp64Nano(val));
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SELECT 'with explicit timezone';
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WITH
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'UTC' as timezone,
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CAST(1234567891011 AS Int64) AS val
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SELECT
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val,
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toUnixTimestamp64Milli(fromUnixTimestamp64Milli(val, timezone)),
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toUnixTimestamp64Micro(fromUnixTimestamp64Micro(val, timezone)),
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toUnixTimestamp64Nano(fromUnixTimestamp64Nano(val, timezone)) AS v,
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toTypeName(v); |