argAndMin

Introduced in: v1.1.0 Calculates the arg and val value for a minimum val value. If there are multiple rows with equal val being the minimum, which of the associated arg and val is returned is not deterministic. Both parts the arg and the min behave as aggregate functions, they both skip Null during processing and return not Null values if not Null values are available.

The only difference with argMin is that argAndMin returns both argument and value.

See also

argMin
Tuple

Syntax

argAndMin(arg, val)

Arguments

arg — Argument for which to find the minimum value. const String
val — The minimum value. (U)Int8/16/32/64 or Float* or Date or DateTime or Tuple

Returned value Returns a tuple containing the arg value that corresponds to minimum val value and the minimum val value. Tuple Examples Basic usage

Query

SELECT argAndMin(user, salary) FROM salary;

Response

┌─argAndMin(user, salary)─┐
│ ('worker',1000)         │
└─────────────────────────┘

Extended example with NULL handling

Query

CREATE TABLE test
(
    a Nullable(String),
    b Nullable(Int64)
)
ENGINE = Memory AS
SELECT *
FROM VALUES((NULL, 0), ('a', 1), ('b', 2), ('c', 2), (NULL, NULL), ('d', NULL));

SELECT argMin(a,b), argAndMin(a, b), min(b) FROM test;

Response

┌─argMin(a, b)─┬─argAndMin(a, b)─┬─min(b)─┐
│ a            │ ('a',1)         │      0 │
└──────────────┴─────────────────┴────────┘

Using Tuple in arguments

Query

SELECT argAndMin(a, (b, a)), min(tuple(b, a)) FROM test;

Response

┌─argAndMin(a, (b, a))─┬─min((b, a))─┐
│ ('a',(1,'a'))        │ (0,NULL)    │
└──────────────────────┴─────────────┘

See also

argMin
Tuple

​argAndMin

argAndMin