-- Tags: no-parallel -- Tag no-parallel: Messes with internal cache SYSTEM DROP QUERY CACHE; DROP TABLE IF EXISTS t; -- Create test table with lot's of rows CREATE TABLE t(c String) ENGINE=MergeTree ORDER BY c; INSERT INTO t SELECT multiIf(n = 0, 'abc', n = 1, 'def', n = 2, 'abc', n = 3, 'jkl', '') FROM (SELECT number % 4 AS n FROM numbers(1200)); OPTIMIZE TABLE t FINAL; -- Run query which, store *compressed* result in query cache SELECT '-- insert with enabled compression'; SELECT * FROM t ORDER BY c SETTINGS use_query_cache = true, query_cache_compress_entries = true; -- Run again to check that no bad things happen and that the result is as expected SELECT '-- read from cache'; SELECT * FROM t ORDER BY c SETTINGS use_query_cache = true; SYSTEM DROP QUERY CACHE; -- Run query which, store *uncompressed* result in query cache SELECT '-- insert with disabled compression'; SELECT * FROM t ORDER BY c SETTINGS use_query_cache = true, query_cache_compress_entries = false; -- Run again to check that no bad things happen and that the result is as expected SELECT '-- read from cache'; SELECT * FROM t ORDER BY c SETTINGS use_query_cache = true; DROP TABLE t; SYSTEM DROP QUERY CACHE;