
当前连接数
ch7.nauu.com :) SELECT * FROM system.metrics WHERE metric LIKE '%Connection';
SELECT *
FROM system.metrics
WHERE metric LIKE '%Connection'
┌─metric────────────────┬─value─┬─description─────────────────────────────────────────────────────────┐
│ TCPConnection │ 2 │ Number of connections to TCP server (clients with native interface) │
│ HTTPCon...