https://www.h2database.com/html/functions.html#unnestThis one.Sent from my Galaxy -------- Original message --------From: Adam R <adam.j.ro...@gmail.com> Date: 26/04/2022 05:59 (GMT+01:00) To: H2 Database <h2-database@googlegroups.com> Subject: [h2] Is it possible to flatten arrays when doing nested array aggregation? Here's a toy example:CREATE TABLE MY_TABLE (ID INT, NAME VARCHAR);INSERT INTO MY_TABLE VALUES(1, 'a');INSERT INTO MY_TABLE VALUES(2, 'a');INSERT INTO MY_TABLE VALUES(3, 'b');INSERT INTO MY_TABLE VALUES(4, 'b');SELECT ARRAY_AGG(IDS) AS IDS FROM (SELECT ARRAY_AGG(ID) AS IDS FROM MY_TABLE GROUP BY NAME)This will return [[1, 2], [3, 4]]. What I'd like is a way to flatten the inner arrays so that I end up with a single array, like [1, 2, 3, 4]. Is this possible in H2? (In a way that would would work for an arbitrary number of array elements).Thank you.
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