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Posted to dev@flink.apache.org by "jackylau (Jira)" <ji...@apache.org> on 2022/09/02 06:43:00 UTC

[jira] [Created] (FLINK-29182) SumAggFunction redundant computations

jackylau created FLINK-29182:
--------------------------------

             Summary: SumAggFunction redundant computations
                 Key: FLINK-29182
                 URL: https://issues.apache.org/jira/browse/FLINK-29182
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Planner
    Affects Versions: 1.16.0
            Reporter: jackylau
             Fix For: 1.16.0


{code:java}
// code placeholder
public Expression[] accumulateExpressions() {
    return new Expression[] {
        /* sum = */ ifThenElse(
                isNull(operand(0)),
                sum,
                ifThenElse(
                        isNull(operand(0)),
                        sum,
                        ifThenElse(isNull(sum), operand(0), adjustedPlus(sum, operand(0)))))
    };
} {code}
it exists redundant computations



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