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Editorial Team
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Asked: 2026-05-28T17:59:15+00:00

As the title says, the row count differs when doing a select using DATE

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As the title says, the row count differs when doing a select using DATE and DATETIME. Please advise.

I’m trying to select rows between 1st and 5th Jan, 2012. The date column datatype is bigint (UNIX timestamp).

select * from table_name
where sample_timestamp between unix_timestamp('2012-01-01')*1000 and unix_timestamp('2012-01-05')*1000

If I include the time in HH:MM:SS, the rows returned are correct i.e.

select * from table_name
where sample_timestamp between unix_timestamp('2012-01-01 00:00:00')*1000 and unix_timestamp('2012-01-05 23:59:59')*1000

Any input will be much appreciated. Thanks.

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1 Answer

  1. Editorial Team

    ‘2012-01-05’ is actually ‘2012-01-05 00:00:00’ which is not what you’re writing in the second select.

    I suspect what you mean to do is

    select * from table_name 
where sample_timestamp >= unix_timestamp('2012-01-01')*1000 
and sample_timestamp < unix_timestamp('2012-01-06')*1000

    which as a bonus handles leap seconds correctly too 🙂

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