SET compile_expressions = 1; SET min_count_to_compile_expression = 0; SELECT nan AS value, value = value, value = materialize(value), materialize(value) = value, materialize(value) = materialize(value); SELECT cast(nan, 'Float32') AS value, value = value, value = materialize(value), materialize(value) = value, materialize(value) = materialize(value); SELECT nan AS lhs, cast(nan, 'Float32') AS rhs, lhs = rhs, lhs = materialize(rhs), materialize(lhs) = rhs, materialize(lhs) = materialize(rhs); SELECT '--'; DROP TABLE IF EXISTS test_table; CREATE TABLE test_table ( id UInt32, value UInt32 ) ENGINE = MergeTree ORDER BY id; INSERT INTO test_table VALUES (76, 57); SELECT value FROM (SELECT stddevSamp(id) AS value FROM test_table) as subquery WHERE ((value = value) AND (NOT (value = value))); DROP TABLE test_table; SELECT '--'; SELECT nan AS value, value != value, value != materialize(value), materialize(value) != value, materialize(value) != materialize(value); SELECT cast(nan, 'Float32') AS value, value != value, value != materialize(value), materialize(value) != value, materialize(value) != materialize(value); SELECT nan AS lhs, cast(nan, 'Float32') AS rhs, lhs != rhs, lhs != materialize(rhs), materialize(lhs) != rhs, materialize(lhs) != materialize(rhs); SELECT '--'; CREATE TABLE test_table ( id UInt32, value_1 UInt32, value_2 Float32 ) ENGINE = MergeTree ORDER BY id; INSERT INTO test_table VALUES (12000, 36, 77.94); SELECT value FROM (SELECT (corr(value_1, value_1) OVER test_window) AS value FROM test_table WINDOW test_window AS (PARTITION BY value_2 ORDER BY id ASC)) as subquery WHERE not (not (value <> value)); DROP TABLE test_table; SELECT '--'; CREATE TABLE test_table ( id Float32, value Float32 ) ENGINE=MergeTree ORDER BY id; INSERT INTO test_table VALUES (-10.75, 95.57); SELECT * FROM (SELECT corr(id, id) as corr_value FROM test_table GROUP BY value) AS subquery LEFT ANTI JOIN test_table ON (subquery.corr_value = test_table.id) WHERE (test_table.id >= test_table.id) AND (NOT (test_table.id >= test_table.id)); DROP TABLE test_table;