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Posted to commits@calcite.apache.org by GitBox <gi...@apache.org> on 2019/09/26 17:56:46 UTC

[GitHub] [calcite] julianhyde commented on issue #1457: [WIP][Prototype][CALCITE-3340] TUMBLE as a TableFunction

julianhyde commented on issue #1457: [WIP][Prototype][CALCITE-3340] TUMBLE as a TableFunction 
URL: https://github.com/apache/calcite/pull/1457#issuecomment-535617726
 
 
   Well, technically it is both. It is a user-defined function (UDF), and it is a table function. That is, it returns a table.
   
   Functions that return tables can be used in the FROM clause via the TABLE operator.
   
   All UDFs (those that return tables and those that return scalar values) occupy the same namespace.

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