DROP TABLE IF EXISTS t_nested_with_dots; CREATE TABLE t_nested_with_dots (n Nested(id UInt64, `values.id` Array(UInt64))) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO t_nested_with_dots VALUES ([1], [[1]]); SELECT * FROM t_nested_with_dots; SELECT n.values.id FROM t_nested_with_dots; DROP TABLE IF EXISTS t_nested_with_dots; SET flatten_nested = 0; CREATE TABLE t_nested_with_dots (n Nested(id UInt64, `values.id` Array(UInt64))) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO t_nested_with_dots VALUES ([(1, [1])]); SELECT * FROM t_nested_with_dots; SELECT n.values.id FROM t_nested_with_dots; DROP TABLE IF EXISTS t_nested_with_dots; CREATE TABLE t_nested_with_dots (`t.t2` Tuple(`t3.t4.t5` Tuple(`s1.s2` String, `u1.u2` UInt64), `s3.s4.s5` String)) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO t_nested_with_dots VALUES ((('a', 1), 'b')); SELECT * FROM t_nested_with_dots; SELECT t.t2.t3.t4.t5.s1.s2, t.t2.t3.t4.t5.u1.u2 FROM t_nested_with_dots; SELECT t.t2.t3.t4.t5.s1.s2, t.t2.s3.s4.s5 FROM t_nested_with_dots; DROP TABLE IF EXISTS t_nested_with_dots;