DonnyZone commented on issue #1405: [CALCITE-2772] Support varargs UDF for scalar function URL: https://github.com/apache/calcite/pull/1405#issuecomment-575573028 Hi, @gr4ve, could you please rebase this work? We have encountered use case that varargs UDF can play important role. As we use Calcite to connect different datasources, we need to define many "fake" (i.e., just registered but without implemention) functions and push them down and then generates SQL to run in underlying datasources. On one hand, the function iteself may be vararag. On the other hand, varargs UDF can help us to define just one for many functions that have same name.
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