SET allow_experimental_analyzer = 1; EXPLAIN QUERY TREE run_passes = 0 SELECT 1; SELECT '--'; DROP TABLE IF EXISTS test_table; CREATE TABLE test_table ( id UInt64, value String ) ENGINE=TinyLog; INSERT INTO test_table VALUES (0, 'Value'); EXPLAIN QUERY TREE run_passes = 0 SELECT id, value FROM test_table; SELECT '--'; EXPLAIN QUERY TREE run_passes = 1 SELECT id, value FROM test_table; SELECT '--'; EXPLAIN QUERY TREE run_passes = 0 SELECT arrayMap(x -> x + id, [1, 2, 3]) FROM test_table; SELECT '--'; EXPLAIN QUERY TREE run_passes = 1 SELECT arrayMap(x -> x + 1, [1, 2, 3]) FROM test_table; SELECT '--'; EXPLAIN QUERY TREE run_passes = 0 WITH x -> x + 1 AS lambda SELECT lambda(id) FROM test_table; SELECT '--'; EXPLAIN QUERY TREE run_passes = 1 WITH x -> x + 1 AS lambda SELECT lambda(id) FROM test_table; DROP TABLE test_table;