DROP TABLE IF EXISTS xp; DROP TABLE IF EXISTS xp_d; SET log_queries = 1; CREATE TABLE xp (`A` Date, `B` Int64, `S` String) ENGINE = MergeTree PARTITION BY toYYYYMM(A) ORDER BY B; INSERT INTO xp SELECT '2020-01-01', number, '' FROM numbers(100000); CREATE TABLE xp_d AS xp ENGINE = Distributed(test_shard_localhost, currentDatabase(), xp); -- FIXME: this query spontaneously returns either 8 or 20 error code. Looks like it's potentially flaky. -- SELECT count(7 = (SELECT number FROM numbers(0) ORDER BY number ASC NULLS FIRST LIMIT 7)) FROM xp_d PREWHERE toYYYYMM(A) GLOBAL IN (SELECT NULL = (SELECT number FROM numbers(1) ORDER BY number DESC NULLS LAST LIMIT 1), toYYYYMM(min(A)) FROM xp_d) WHERE B > NULL; -- { serverError 8 } SELECT count() FROM xp_d WHERE A GLOBAL IN (SELECT NULL); -- { serverError 53 } DROP TABLE IF EXISTS xp; DROP TABLE IF EXISTS xp_d; DROP TABLE IF EXISTS trace_log; CREATE TABLE trace_log ( `event_date` Date, `event_time` DateTime, `event_time_microseconds` DateTime64(6), `timestamp_ns` UInt64, `revision` UInt32, `trace_type` Enum8('Real' = 0, 'CPU' = 1, 'Memory' = 2, 'MemorySample' = 3), `thread_id` UInt64, `query_id` String, `trace` Array(UInt64), `size` Int64 ) ENGINE = MergeTree PARTITION BY toYYYYMM(event_date) ORDER BY (event_date, event_time) SETTINGS index_granularity = 8192; INSERT INTO trace_log values ('2020-10-06','2020-10-06 13:43:39','2020-10-06 13:43:39.208819',1601981019208819975,54441,'Real',20412,'2e8ddf40-48da-4641-8ccc-573dd487753f',[140316350688023,130685338,226362737,224904385,227758790,227742969,227761037,224450136,219847931,219844987,219854151,223212098,223208665,228194329,228227607,257889111,257890159,258775545,258767526,140316350645979,140316343425599],0); set allow_introspection_functions = 1; -- make sure query_log exists SYSTEM FLUSH LOGS; WITH concat(addressToLine(arrayJoin(trace) AS addr), '#') AS symbol SELECT count() > 7 FROM trace_log AS t WHERE (query_id = ( SELECT [NULL, NULL, NULL, NULL, 0.00009999999747378752, NULL, NULL, NULL, NULL, NULL], query_id FROM system.query_log WHERE current_database = currentDatabase() AND (query LIKE '%test cpu time query profiler%') AND (query NOT LIKE '%system%') ORDER BY event_time DESC LIMIT 1 )) AND (symbol LIKE '%Source%'); WITH addressToSymbol(arrayJoin(trace)) AS symbol SELECT count() > 0 FROM trace_log AS t WHERE greaterOrEquals(event_date, ignore(ignore(ignore(NULL, '')), 256), yesterday()) AND (trace_type = 'Memory') AND (query_id = ( SELECT ignore(ignore(ignore(ignore(65536)), ignore(65537), ignore(2)), ''), query_id FROM system.query_log WHERE current_database = currentDatabase() AND (event_date >= yesterday()) AND (query LIKE '%test memory profiler%') ORDER BY event_time DESC LIMIT 1 )); -- { serverError 42 } DROP TABLE IF EXISTS trace_log; SYSTEM FLUSH LOGS; WITH ( ( SELECT query_start_time_microseconds FROM system.query_log WHERE current_database = currentDatabase() ORDER BY query_start_time DESC LIMIT 1 ) AS time_with_microseconds, ( SELECT inf, query_start_time FROM system.query_log WHERE current_database = currentDatabase() ORDER BY query_start_time DESC LIMIT 1 ) AS t) SELECT if(dateDiff('second', toDateTime(time_with_microseconds), toDateTime(t)) = -9223372036854775808, 'ok', ''); -- { serverError 43 } WITH ( ( SELECT query_start_time_microseconds FROM system.query_log WHERE current_database = currentDatabase() ORDER BY query_start_time DESC LIMIT 1 ) AS time_with_microseconds, ( SELECT query_start_time FROM system.query_log WHERE current_database = currentDatabase() ORDER BY query_start_time DESC LIMIT 1 ) AS t) SELECT if(dateDiff('second', toDateTime(time_with_microseconds), toDateTime(t)) = -9223372036854775808, 'ok', ''); set joined_subquery_requires_alias=0; SELECT number, number / 2 AS n, j1, j2 FROM remote('127.0.0.{2,3}', system.numbers) GLOBAL ANY LEFT JOIN (SELECT number / 3 AS n, number AS j1, 'Hello' AS j2 FROM system.numbers LIMIT 1048577) USING (n) LIMIT 10 format Null;