ClickHouse/docs/en/sql-reference/aggregate-functions/reference/minmap.md

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---
toc_priority: 142
---
# minMap {#agg_functions-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.
2020-09-16 14:14:33 +00:00
Passing a tuple of keys and value arrays is identical 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:
``` sql
SELECT minMap(a, b)
FROM values('a Array(Int32), b Array(Int64)', ([1, 2], [2, 2]), ([2, 3], [1, 1]))
```
``` text
┌─minMap(a, b)──────┐
│ ([1,2,3],[2,1,1]) │
└───────────────────┘
```