[Feature] max_by, min_by aggregate function support

[hf200012]

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Description

max_by(x, y) Query the corresponding x value when y is the maximum value.
max_by(x, y, n) Query the x values corresponding to the largest n y values, and return the result as an array.
min_by(x, y) Query the corresponding x value when y is the minimum value.
min_by(x, y, n) Query the x value corresponding to the smallest n y values. The result is returned as an array.

Use case

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