any_value aggregate function

Applies to: Databricks SQL Databricks Runtime 11.3 LTS and above

Returns some value of expr for a group of rows. This function is non-deterministic.

any_value(expr[, ignoreNull]) [FILTER ( WHERE cond ) ] [ IGNORE NULLS | RESPECT NULLS ]

This function can also be invoked as a window function using the OVER clause.

• expr: An expression of any type.
• ignoreNull: An optional BOOLEAN literal defaulting to false. The default for ignoreNull is false.
• cond: An optional boolean expression filtering the rows used for aggregation.
• IGNORE NULLS or RESPECT NULLS: When IGNORE NULLS is used or ignoreNull is true any expr value that is NULL is ignored. The default is RESPECT NULLS.

The result has the same type as expr.

> SELECT any_value(col) FROM VALUES (10), (5), (20) AS tab(col);
 10

-- Subsequent executions may yield a different results
> SELECT any_value(col) FROM VALUES (10), (5), (20) AS tab(col);
 20

> SELECT any_value(col) FROM VALUES (NULL), (5), (20) AS tab(col);
 NULL

> SELECT any_value(col) IGNORE NULLS FROM VALUES (NULL), (5), (20) AS tab(col);
 5

• min aggregate function
• max aggregate function
• last aggregate function
• first_value aggregate function
• Window functions