-- https://github.com/ClickHouse/ClickHouse/issues/50570 DROP TABLE IF EXISTS tnul SYNC; DROP TABLE IF EXISTS tlc SYNC; CREATE TABLE tnul (lc Nullable(String)) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO tnul VALUES (NULL), ('qwe'); SELECT 'pure nullable result:'; SELECT lc FROM tnul WHERE notIn(lc, ('rty', 'uiop')); DROP TABLE tnul SYNC; CREATE TABLE tlc (lc LowCardinality(Nullable(String))) ENGINE = MergeTree ORDER BY tuple(); INSERT INTO tlc VALUES (NULL), ('qwe'); SELECT 'wrapping in LC:'; SELECT lc FROM tlc WHERE notIn(lc, ('rty', 'uiop')); DROP TABLE tlc SYNC;