Github user dubin555 commented on the issue: https://github.com/apache/flink/pull/5202 Hi @sunjincheng121 . Thanks for the review. I already finished some changed for code cleaning and remove the duplicate test case base on your comment. There are some similar implements in other Database, like MySQL, https://dev.mysql.com/doc/refman/5.7/en/bit-functions.html Oracle, https://docs.oracle.com/cd/E22583_01/DR/help/BitShift.html In Apache Spark, also exists similar implements, https://issues.apache.org/jira/browse/SPARK-8223 Thanks, Du Bin
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