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minMap
Syntax: minMap(key, value) or minMap(Tuple(key, value))
Calculates the minimum from value array according to the keys specified in the key array.
Passing tuple of keys and values arrays is a synonym to passing two arrays of keys and values.
The number of elements in key and value must be the same for each row that is totaled.
Returns a tuple of two arrays: keys in sorted order, and values calculated for the corresponding keys.
Example:
SELECT minMap(a, b)
FROM values('a Array(Int32), b Array(Int64)', ([1, 2], [2, 2]), ([2, 3], [1, 1]))
┌─minMap(a, b)──────┐
│ ([1,2,3],[2,1,1]) │
└───────────────────┘