whutpencil commented on pull request #7301:
URL: https://github.com/apache/incubator-doris/pull/7301#issuecomment-986102468
> Hi @whutpencil , thanks for your contribution. But you have implement the
function on BE side (required) and FE side(Optional), or the query may crash
during the execution.
>
> The FE side implementation of a function is just for calculating the
function result with all constant parameters. such as `date_trunc('2010-12-02
19:28:30', 'year');`, but is we call `date_trunc(column1, 'year');`, it has to
be executed on BE side.
>
> But if you wish, you can just pull your FE side implementation, and see if
someone can help you to impement the BE side based on your FE side
implementation.
Thank you for your explanation. My FE implementation has been attached. This
is my first time to submit PR, hoping to make some contributions to the Doris
community. The logic of this function is not complex, so I hope someone can
implement the BE end as soon as possible.
After then we can remove the word "developing" from the doc.
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