ClickHouse/tests/queries/0_stateless/02210_processors_profile_log.sql
2024-06-23 17:36:27 +02:00

32 lines
1.1 KiB
SQL

EXPLAIN PIPELINE SELECT sleep(1);
SELECT sleep(1) SETTINGS log_processors_profiles=true, log_queries=1, log_queries_min_type='QUERY_FINISH';
SYSTEM FLUSH LOGS;
WITH
(
SELECT query_id
FROM system.query_log
WHERE current_database = currentDatabase() AND Settings['log_processors_profiles']='1'
) AS query_id_
SELECT
name,
multiIf(
-- ExpressionTransform executes sleep(),
-- so IProcessor::work() will spend 1 sec.
name = 'ExpressionTransform', elapsed_us>=1e6 ? 1 : elapsed_us,
-- SourceFromSingleChunk, that feed data to ExpressionTransform,
-- will feed first block and then wait in PortFull.
name = 'SourceFromSingleChunk', output_wait_elapsed_us>=1e6 ? 1 : output_wait_elapsed_us,
-- NullSource/LazyOutputFormatLazyOutputFormat are the outputs
-- so they cannot starts to execute before sleep(1) will be executed.
input_wait_elapsed_us>=1e6 ? 1 : input_wait_elapsed_us)
elapsed,
input_rows,
input_bytes,
output_rows,
output_bytes
FROM system.processors_profile_log
WHERE query_id = query_id_
ORDER BY name;