- Categories:
Aggregate Functions (Counting Distinct Values) , Window Functions (Semi-structured Data Aggregation)
ARRAY_UNIQUE_AGG¶
Returns an ARRAY that contains all of the distinct values from the specified column.
Syntax¶
ARRAY_UNIQUE_AGG( <column> )
Arguments¶
column
The column containing the values.
Returns¶
The function returns an ARRAY containing the distinct values in the specified column. The values in the ARRAY are in no particular order, and the order is not deterministic.
The function ignores NULL values in column
. If column
contains only NULL values or the table containing
column
is empty, the function returns an empty ARRAY.
Usage Notes¶
This function can be used as either of the following types of functions:
-
When used as a window function, this does not support window frames.