DROP TABLE IF EXISTS arraytest;

set allow_deprecated_syntax_for_merge_tree=1;
set input_format_null_as_default=0;
CREATE TABLE arraytest ( created_date Date DEFAULT toDate(created_at), created_at DateTime DEFAULT now(), strings Array(String) DEFAULT emptyArrayString()) ENGINE = MergeTree(created_date, cityHash64(created_at), (created_date, cityHash64(created_at)), 8192);

INSERT INTO arraytest (created_at, strings) VALUES (now(), ['aaaaa', 'bbbbb', 'ccccc']);
INSERT INTO arraytest (created_at, strings) VALUES (now(), ['aaaaa', 'bbbbb', null]); -- { clientError CANNOT_INSERT_NULL_IN_ORDINARY_COLUMN }

SELECT strings from arraytest;

DROP TABLE IF EXISTS arraytest;