This command removes the database and also removes the directory and files on the database server for the database. Just like the other databases here, there is no MySQL “delete database” command specifically, but the Drop Database command is used to drop or delete a database. PostgreSQL...
The DROP command removes all the objects stored in the database and database from the SQL server. The DROP query removes the database permanently from the SQL Server. If tables and views stored in the database are important for you, then the data backup needs to be kept in another datab...
operatesDatabase+string name+string state+drop()SQLServer+string serverName+connect()+executeCommand() 架构解析 架构设计包含了系统中各组件的交互与协作。此处,我们采用C4架构图,展示SQL Server的数据库管理组件和删除数据库的流程。 <<person>>用户<<system>>SQL Server<<external_system>>外部应用操作提供数据...
Most recompilations in SQL Server are performed for good reasons. Some of them are necessary to ensure statement correctness; others are performed to obtain potentially better query execution plans as data in a SQL Server database changes. Sometimes, however, recompilations can slow down batch exec...
SQL建立数据库及删除数据库命令,需要使用sqlserver的朋友可以参考下。 代码如下: CREATE DATABASE 临时的 ON ( NAME='临时的_Data', FILENAME='h:\临时的.mdf', SIZE=5MB, MAXSIZE=50MB, FILEGROWTH=10% ) LOG ON ( NAME='临时的_LOG', FILENAME='h:\临时的.ldf', ...
drop database 数据库名; 5、使用数据句库 use database 数据库名; 6、查看数据库中所有表 show tables; 表的操作 1、查看表结构 desc 表名; 2、创建表结构的语法 create table table_name(字段名 数据类型 可选的约束条件); demo:创建班级和学生表 ...
DROP DATABASE TheDROP DATABASEcommand is used to delete an existing SQL database. The following SQL drops a database named "testDB": ExampleGet your own SQL Server DROPDATABASEtestDB; Note:Be careful before dropping a database. Deleting a database will result in loss of complete ...
命令:drop database 数据库名; 示例:drop database student; 新建表格: 命令:create table 表名 (列名 数据类型,列名2...) 示例:create table student (sname char(20),sid int) 扩展命令: create table teacher ( userid int identity(1,1) not null primary key, --创建表时创建主键 username...
@command=N'DROP DATABASE [ssAdventureWork_dbss2230]', @database_name=N'master', @flags=0 IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback /*** Object: Step [Create Snapshot] Script Date: 01/29/2008 16:39:32 ***/ EXEC @Return...
To delete a database: 要删除一个数据库的话可以这样写: DROP DATABASE database_name --- Truncate a Table 截表 What if we only want to get rid of the data inside a table, and not the table itself? Use the TRUNCATE TABLE command (deletes only the data inside the table): 当我们只想...