aai95 commented on issue #6783: [FLINK-10472] [table] Add CBRT math function supported in Table API and SQL URL: https://github.com/apache/flink/pull/6783#issuecomment-428144132 @Guibo-Pan thank you for your suggestion. The idea about adding the "Nth root" function sounds good to me. It will be analog of existing `POWER(x, y) = x ^ y`, but can be more useful in SQL like `ROOT(125, 3)` will produce 5, instead of `POWER(125, 1.0 / 3.0)`. More pleasent syntax, I can rename this issue and rewrite implementation based on idea that `root(x, y) = power(x, 1 / y)`. What do you think about it?
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