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ASF GitHub Bot commented on FLINK-4565: --------------------------------------- Github user twalthr commented on the issue: https://github.com/apache/flink/pull/3502 Hi @DmytroShkvyra, as I mentioned earlier, the first thing we should fix in this PR is using more of Calcite capabilities. Calcite provides a `SubQueryRemoveRule` and according to the Javadoc this is exaclty what we need in order to properly support the IN for non-literals. ``` Transform that converts IN, EXISTS and scalar sub-queries into joins. ``` But I'm fine with focusing on literals first, if you like. In general, creating objects in streaming applications is always very expensive as they have to be garbage collected which affects latency and throughput. BigDecimal should be avoided at all times and only be used if it is really necessary. > Support for SQL IN operator > --------------------------- > > Key: FLINK-4565 > URL: https://issues.apache.org/jira/browse/FLINK-4565 > Project: Flink > Issue Type: Improvement > Components: Table API & SQL > Reporter: Timo Walther > Assignee: Dmytro Shkvyra > > It seems that Flink SQL supports the uncorrelated sub-query IN operator. But > it should also be available in the Table API and tested. -- This message was sent by Atlassian JIRA (v6.3.15#6346)