English中文日本語한국어3.xSQL FunctionsScalar FunctionsSystem FunctionsCONNECTION_ID이 페이지의 내용CONNECTION_IDDescription Get the connection number of the current sql client. Syntax CONNECTION_ID() Return Value The connection number of the current sql client. Examples select connection_id(); +-----------------+| connection_id() |+-----------------+| 549 |+-----------------+