mqliang commented on pull request #6820:
URL: https://github.com/apache/incubator-pinot/pull/6820#issuecomment-823594856
@Jackie-Jiang
> Is ago() a standard sql function? I feel it might be more intuitive to use
now() +/- period('PT1H)?
I think adding a `period_add(now(), 'PT1H')` function looks much better:
* It can accept a positive/negative period to get a time before/after a
given period.
* The first parameter can not only be `now()`, but also be some other time
expression, so much more flexible.
* MySQL has such a function:
https://w3resource.com/mysql/date-and-time-functions/mysql-period_add-function.php.
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