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46 lines
2.1 KiB
SQL
46 lines
2.1 KiB
SQL
-- Tags: no-parallel
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DROP TABLE IF EXISTS t_primary_index_cache;
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CREATE TABLE t_primary_index_cache (a UInt64, b UInt64)
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ENGINE = MergeTree ORDER BY a PARTITION BY a % 2
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SETTINGS use_primary_key_cache = 1, prewarm_primary_key_cache = 0, index_granularity = 64, index_granularity_bytes = '10M', min_bytes_for_wide_part = 0;
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SYSTEM DROP PRIMARY INDEX CACHE;
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INSERT INTO t_primary_index_cache SELECT number, number FROM numbers(10000);
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SYSTEM RELOAD ASYNCHRONOUS METRICS;
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SELECT sum(primary_key_bytes_in_memory) FROM system.parts WHERE table = 't_primary_index_cache' AND active;
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SELECT metric, value FROM system.asynchronous_metrics WHERE metric IN ('PrimaryIndexCacheFiles', 'PrimaryIndexCacheBytes') ORDER BY metric;
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SELECT count() FROM t_primary_index_cache WHERE a > 100 AND a < 200;
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SYSTEM RELOAD ASYNCHRONOUS METRICS;
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SELECT sum(primary_key_bytes_in_memory) FROM system.parts WHERE table = 't_primary_index_cache' AND active;
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SELECT metric, value FROM system.asynchronous_metrics WHERE metric IN ('PrimaryIndexCacheFiles', 'PrimaryIndexCacheBytes') ORDER BY metric;
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SYSTEM DROP PRIMARY INDEX CACHE;
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SYSTEM RELOAD ASYNCHRONOUS METRICS;
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SELECT sum(primary_key_bytes_in_memory) FROM system.parts WHERE table = 't_primary_index_cache' AND active;
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SELECT metric, value FROM system.asynchronous_metrics WHERE metric IN ('PrimaryIndexCacheFiles', 'PrimaryIndexCacheBytes') ORDER BY metric;
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SELECT count() FROM t_primary_index_cache WHERE a > 100 AND a < 200 AND a % 2 = 0;
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SYSTEM RELOAD ASYNCHRONOUS METRICS;
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SELECT sum(primary_key_bytes_in_memory) FROM system.parts WHERE table = 't_primary_index_cache' AND active;
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SELECT metric, value FROM system.asynchronous_metrics WHERE metric IN ('PrimaryIndexCacheFiles', 'PrimaryIndexCacheBytes') ORDER BY metric;
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SYSTEM FLUSH LOGS;
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SELECT
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ProfileEvents['LoadedPrimaryIndexFiles'],
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ProfileEvents['LoadedPrimaryIndexRows'],
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ProfileEvents['LoadedPrimaryIndexBytes']
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FROM system.query_log
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WHERE query LIKE 'SELECT count() FROM t_primary_index_cache%' AND current_database = currentDatabase() AND type = 'QueryFinish'
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ORDER BY event_time_microseconds;
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DROP TABLE t_primary_index_cache;
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