morningman commented on pull request #7301:
URL: https://github.com/apache/incubator-doris/pull/7301#issuecomment-986045937
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.
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