ClickHouse/tests/queries/0_stateless/01091_num_threads.sql

set log_queries=1;
set log_query_threads=1;

SELECT 1;
SYSTEM FLUSH LOGS;

WITH 
    (
        SELECT query_id
        FROM system.query_log
        WHERE (query = 'SELECT 1')
        ORDER BY event_time DESC
        LIMIT 1
    ) AS id
SELECT uniqExact(thread_id)
FROM system.query_thread_log
WHERE (query_id = id) AND (thread_id != master_thread_id);

select sum(number) from numbers(1000000);
SYSTEM FLUSH LOGS;

WITH 
    (
        SELECT query_id
        FROM system.query_log
        WHERE (query = 'SELECT sum(number) FROM numbers(1000000)')
        ORDER BY event_time DESC
        LIMIT 1
    ) AS id
SELECT uniqExact(thread_id)
FROM system.query_thread_log
WHERE (query_id = id) AND (thread_id != master_thread_id);

select sum(number) from numbers_mt(1000000);
SYSTEM FLUSH LOGS;

WITH 
    (
        SELECT query_id
        FROM system.query_log
        WHERE (query = 'SELECT sum(number) FROM numbers_mt(1000000)')
        ORDER BY event_time DESC
        LIMIT 1
    ) AS id
SELECT uniqExact(thread_id) > 2
FROM system.query_thread_log
WHERE (query_id = id) AND (thread_id != master_thread_id);