anyLast | RawTree

Selects the last encountered value of a column.

:::warning As a query can be executed in arbitrary order, the result of this function is non-deterministic. If you need an arbitrary but deterministic result, use functions min or max. :::

By default, the function never returns NULL, i.e. ignores NULL values in the input column. However, if the function is used with the RESPECT NULLS modifier, it returns the last value reads no matter if NULL or not.

Syntax

anyLast(column) [RESPECT NULLS]

Arguments

column — The column name. Any

Returned value

Returns the last value encountered. Any

Examples

Usage example

CREATE TABLE tab(city Nullable(String)) ENGINE=Memory;
INSERT INTO tab (city) VALUES ('Amsterdam'), (NULL), ('New York'), ('Tokyo'), ('Valencia'), (NULL);
SELECT anyLast(city), anyLastRespectNulls(city) FROM tab;

┌─anyLast(city)─┬─anyLastRespectNulls(city)─┐
│ Valencia      │ ᴺᵁᴸᴸ                      │
└───────────────┴───────────────────────────┘

Introduced in version 1.1.