To drop a database in SQL Server, use the Drop Database command: DROPDATABASE[IFEXISTS]{database_name|database_snapshot_name}; You can run this when you are connected to your server. The IF EXISTS keyword is optional and will drop the database if it exists. If the database does not...
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...
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', ...
DROPINDEXindex_nameONtable_name; SQL Server: DROPINDEXtable_name.index_name; DB2/Oracle: DROPINDEXindex_name; MySQL: ALTERTABLEtable_name DROPINDEXindex_name; DROP DATABASE TheDROP DATABASEcommand is used is to delete an existing SQL database. ...
The DROP DATABASE command is used to delete an existing SQL database.The following SQL drops a database named "testDB":Example DROP DATABASE testDB; Note: Be careful before dropping a database. Deleting a database will result in loss of complete information stored in the database!
create database jack; use jack; create table kaven ( id integer auto_increment, primary key PRIMARY_KEY(id) ); lock tables kaven as kv read local; create database jack2; 1. 2. 3. 4. 5. 6. 7. 8. Can’t execute the given command because you have active locked tables or an acti...
DROP TABLE table_name 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...
sql server drop database删除数据库能恢复吗 把sql server删了,1.先把SQLServer卸载,再把安装时产生的“MicrosoftSQLServer”文件夹删掉,在运行注册表,把HKEY_CURRENT_USER\Software\Microsoft\MicrosoftSQLServer,HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MicrosoftSQLS
drop database 库名;:删除一个数据库。 ALTER DATABASE 库名 DEFAULT CHARACTER SET 编码格式 DEFAULT COLLATE 排序规则:修改数据库的编码格式、排序规则。 1.3、MySQL表相关的命令 对于MySQL表相关的命令,首先来聊一聊创建表的SQL命令,如下: CREATE TABLE `库名`.`表名` ( 字段名称1 数据类型(精度限制) [字...
DROP AGGREGATE — 删除一个用户定义的聚集函数 DROP CAST — 删除一个用户定义的类型转换 DROP CONVERSION — 删除一个用户定义的编码转换 DROP DATABASE — 删除一个数据库 DROP DOMAIN — 删除一个用户定义的域 DROP FUNCTION — 删除一个函数 DROP GROUP — 删除一个用户组 ...