1. **a) DELETE DATABASE** `DELETE` 是 SQL 中用于删除表中数据的命令(如 `DELETE FROM table_name`),但无法用于删除数据库本身。语法错误,排除。2. **b) REMOVE DATABASE** `REMOVE` 不是 MySQL 支持的操作关键字,不存在此命令,排除。3. **c) DROP DATABASE** `DROP DATABASE` 是 MySQL ...
百度试题 结果1 题目在MySQL中,用于删除数据库的命令是: A. DELETE DATABASE B. REMOVE DATABASE C. DROP DATABASE D. DESTROY DATABASE 相关知识点: 试题来源: 解析 C 反馈 收藏
1)mysql存储结构: 数据库 -> 表 -> 数据 sql语句 mysql -u root -p; root 2)管理数据库: 增加: create database 数据库 default character utf8; 删除: drop database 数据库; 修改: alter database 数据库 default character gbk; 查询: show databases / show create database 数据库; 3) 管理表:...
一、数据库的连接 QSqlDatabase TB = QSqlDatabase::addDatabase("QMYSQL");// becomes the new default connect //TB.setConnectOptions("CLIENT_SSL=1;CLIENT_IGNORE_SPACE=1");//使用SSL安全连接 TB.setHostName("127.0.0.1");//主机名 TB.setDatabaseName("chat");//数据库名 //TB.setPort(330...
To remove an instance ofMySQL Database Serverfrom your macOS or OSX installation you need to delete a number of files via the command line, but first ensure that you have database dumps of your databases and that then the database server is not running. ...
Additionally you are saying there is no easy way to remove all stored procedures from a database. Even tho it was possible in previous releases. Just trying to be absolutely sure I understand you. Subject Views Written By Posted How to Remove All Stored Procedures in a Specific Database ...
MySQL Shell Download and Import world_x Database Documents and Collections Create, List, and Drop Collections Working with Collections Find Documents Modify Documents Remove Documents Create and Drop Indexes Relational Tables Documents in Tables X Plugin InnoDB Cluster InnoDB ReplicaSet...
Download and Import world_x Database Documents and Collections Create, List, and Drop Collections Working with Collections Find Documents Modify Documents Remove Documents Create and Drop Indexes Relational Tables Documents in Tables Python Quick-Start Guide: MySQL Shell for Document Store ...
mysql -uroot -p mysql: [ERROR] unknown variable 'basedir=D:\JavaWork\dataBase\mysql-5.7.14-winx64' 问题:执行mysql-uroot -p时报错:mysql: [ERROR] unknown variable 'basedir=D:\mysql' 解决: 在my.ini文件里加上[mysqld] 如图: 安装mysql-8.0.11-winx64的过程 ...
OceanBase 数据库社区版仅提供 MySQL 模式。 语法 DBMS_JOB.REMOVE ( job IN BINARY_INTEGER ); 参数解释 参数解释 job 预修改的 Job 对应的唯一 ID。 要查找此 ID,请查询 USER_JOBS 或DBA_JOBS 视图的 JOB 列。 使用说明 在提交之前,Job 将无法由后台的 Job 队列处理。 示例 BEGIN DBMS_JOB.REMOVE(...