minMap

minMappedArrays

Introduced in: v20.5

Calculates the minimum from value array according to the keys specified in the key array.

Note

• Passing a tuple of keys and value arrays is identical to passing an array of keys and an array of values.
• The number of elements in key and value must be the same for each row that is totaled.

Syntax

minMappedArrays(key, value)
minMappedArrays(Tuple(key, value))

Arguments

• key — Array of keys. Array(T)
• value — Array of values. Array(T)

Returned value

Returns a tuple of two arrays: keys in sorted order, and values calculated for the corresponding keys. Tuple(Array(T), Array(T))

Examples

Usage example

SELECT minMappedArrays(a, b)
FROM VALUES('a Array(Int32), b Array(Int64)', ([1, 2], [2, 2]), ([2, 3], [1, 1]));

┌─minMappedArrays(a, b)───────────┐
│ ([1, 2, 3], [2, 1, 1])          │
└─────────────────────────────────┘