-- Tags: no-parallel, no-fasttest -- Tag no-fasttest: Depends on OpenSSL -- Tag no-parallel: Messes with internal cache SYSTEM DROP QUERY CACHE; -- Cache a result of a query with secret in the query cache SELECT hex(encrypt('aes-128-ecb', 'plaintext', 'passwordpassword')) SETTINGS use_query_cache = true; -- The secret should not be revealed in system.query_cache SELECT query FROM system.query_cache; SYSTEM DROP QUERY CACHE;