查询数据库中各表数量 select table_name,table_rows from information_schema.tables where TABLE_SCHEMA = 'miot' order by table_rows desc; 数据库创建用户,并赋权限 CREATE USER 'sonar' IDENTIFIED BY 'sonar'; GRANT ALL ON sonar.* TO 'sonar'@'%' IDENTIFIED BY 'sonar' WITH GRANT
一.JAVA list 转 DataFrame or DataSet case class CaseJava( var num: String, var id: String, var start_time: String, var istop_time: String) val listData: java.util.List[CaseJava] = new java.util.ArrayList[CaseJava] listData.add(new CaseJava("11",&q