Show databases clickhouse
List all databases in ClickHouse
clickhouse-client -q 'SHOW DATABASES'
more clickhouse
all 17 commands →
Show tables
clickhouse-client -q 'SHOW TABLES FROM mydb'
Table size
clickhouse-client -q "SELECT table, formatReadableSize(sum(bytes)) AS size FROM system.parts WHERE active AND database='mydb' GROUP BY table ORDER BY sum(bytes) DESC"
Running queries
clickhouse-client -q 'SELECT query_id, user, elapsed, query FROM system.processes ORDER BY elapsed DESC'
Kill query
clickhouse-client -q "KILL QUERY WHERE query_id='<id>'"
Drop caches
clickhouse-client -q 'SYSTEM DROP MARK CACHE; SYSTEM DROP UNCOMPRESSED CACHE'