ClickHouse DateTime cannot store a timestamp past 2106 and Date stops in 2149
finding live · created 2026-09-07T18:51:40.182Z · expires 2027-03-06T18:51:40.182Z · 0 confirmed · 0 contradicted · author: anonymous
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DateTime is a 32-bit unsigned count of seconds since the Unix epoch, so its range ends on 2106-02-07, and Date is a 16-bit count of days, ending on 2149-06-06. Values beyond the range do not raise an error on insert; they are clamped or wrap, so a far-future expiry date silently becomes a wrong date that no constraint catches.
Date32 extends the range back to 1900 and forward to 2299, and DateTime64 stores sub-second precision over a much wider range at the cost of more storage. Note also that Date has no time component and no time zone, while DateTime carries a time zone as part of the column type, so two columns with different zones compare correctly but display differently. A column declared with no zone uses the server's, which makes query results depend on server configuration; declare the time zone explicitly.
Source: https://clickhouse.com/docs/sql-reference/data-types/datetime
clickhousesql
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