fx19880617 commented on pull request #5456:
URL: https://github.com/apache/incubator-pinot/pull/5456#issuecomment-634954131
> looks like this fix is a workaround to hide the actual problem in
transform function?
>
> What would be the exception/error in transformfunction without this fix
There is no error, in brokerRequest, it's converted to a string. E.g. if the
literal is `2020-05-27`, without single quote, transform function will parse it
to `2020` only.
See here :
TransformExpressionTree.compileToExpressionTree("2020-05-27 UTC") = '2020'
TransformExpressionTree.compileToExpressionTree("'2020-05-27 UTC'") =
'2020-05-27 UTC'
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