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Wenlong Lyu commented on FLINK-25463: ------------------------------------- hi, [~surendra.lalwani], As I known, there is no type of Set according to the sql Standard. If you really need to define a column with type of Set, you should use FunctionHint like the example in the java doc of FunctionHint. If you have problem in defining custom type, you could post your code and error messages, so that we can understand it. > Set is not supported in User Defined Functions > ----------------------------------------------- > > Key: FLINK-25463 > URL: https://issues.apache.org/jira/browse/FLINK-25463 > Project: Flink > Issue Type: Bug > Affects Versions: 1.13.3 > Reporter: Surendra Lalwani > Priority: Major > Fix For: 1.13.6 > > > Hi Team, > > List is supported in UDFs but Set is not supported in UDFs. Please check -- This message was sent by Atlassian Jira (v8.20.1#820001)