List Functions

List Agg

This function does not have a substrait definition.

List Agg creates a list of values per group. This is useful when denormalizing data. It takes in one expression which will be the value added to the list for that row.

SQL Usage

SELECT key1, list_agg(value1) 
FROM table1
GROUP BY key1

Given the following two rows:

1, 'hello' 1, 'world'

The output would be:

1, ['hello', 'world']