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> Mirror of <https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/min-by.html> (Salesforce, Data 360 Query Guide), read 2026-10-23. Salesforce's own page is the authority; this copy exists because that site refuses non-browser readers.

## `MIN_BY`

**Applies to:** ✅ Data 360 SQL ✅ Tableau Hyper API

Returns the `<value>` from the row whose `<key>` is smallest among all rows in the aggregate (or within each group when used with `GROUP BY`).

*   `<value>`: Any expression whose result is returned when its row wins the comparison. The aggregate result type matches this expression’s type.
*   `<key>`: The expression `MIN-BY`uses to order rows. The type must support comparison.

The `<value>` from the row with the minimum `<key>` among considered rows.

**Null handling:**

*   If the aggregate has no input rows (empty table or empty group), the result is `NULL`.
*   If every row has a `NULL` key, those rows are skipped; if no row has a non-`NULL` key, the result is `NULL`.
*   If the winning row’s `<value>` is `NULL`, the result is `NULL` (the key still determines which row wins).

**Tie breaking:**

When multiple rows share the same minimum key, one of the tied `<value>` results is returned; which tied row wins is implementation-dependent.

*   Exactly two arguments are required (`<value>`, `<key>`). Calls with one argument or more than two arguments raise a syntax error.
*   You can combine `min_by` with other aggregates, `GROUP BY`, `HAVING`, subqueries, and expressions in the arguments (for example, `max_by(upper(name), score * 2)`).
*   `min_by` only supports a single value to sort on. To sort using multiple sort criteria, use [FIRST_VALUE WITHIN GROUP](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/first-value-ordered-set.html).
*   Rows with a `NULL``<key>` are ignored when searching for the minimum key.

Returns the name and score from the row with the lowest `score`.

Returns `'Charlie'`.

With keys `5`, `NULL`, `10`, and `15`, the minimum **non-**`NULL` key is `5`, so the result is that row’s `value`.

Returns `10`.

Returns one row per region. For example `North` / `'A'` and `South` / `'B'`.

*   [`MAX_BY`](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/max-by.html)
*   [`MIN`](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/min.html)
*   [Aggregate Functions](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/aggregate.html)


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