在MySQL5.6中参数[RESTRICT | CASCADE]不做任何事情。[TEMPORARY] 关键字表明只删临时表,语句不会结束正在进行的事务(MySQL中DDL语句会隐式提交),不会进行权限检查。 删库 DROP DATABASE Syntax DROP {DATABASE | SCHEMA} [IF EXISTS] db_name... 1. 2. 删除指定库中的表之后删除库。需具有库上的DROP权限...
mysql> help create database Name: 'CREATE DATABASE' Description: Syntax: CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name [create_specification] ... create_specification: [DEFAULT] CHARACTER SET [=] charset_name | [DEFAULT] COLLATE [=] collation_name 1. 2. 3. 4. 5. 6. 7. 8....
[TEMPORARY] keyword表明仅仅删暂时表,语句不会结束正在进行的事务(MySQL中DDL语句会隐式提交)。不会进行权限检查。 删库 DROP DATABASE Syntax DROP {DATABASE | SCHEMA} [IF EXISTS] db_name... 删除指定库中的表之后删除库。需具有库上的DROP权限。 库被删除后库上存在的用户权限不会被自己主动删除。IF E...
In this syntax, `DROP TABLE` specifies the operation, and `table_name` is the name of the table you want to remove. The optional `IF EXISTS` clause prevents errors if the table does not exist. Examples 1. Basic Drop DROP TABLE employees; Powered By This example removes the `employees...
mysql> CREATE DATABASE database_name; ERROR 1007 (HY000): Can't create database 'database_name'; database exists 删除数据库是将已经存在的数据库从磁盘空间上清除,清除之后,数据库中的所有数据也将一同被删除。 删除数据库的基本SQL语法格式为: ...
mysql> HELP ‘DROP DATABASE’;Name: ‘DROP DATABASE’Description:Syntax:DROP {DATABASE | SCHEMA} [IF EXISTS] db_nameDROP DATABASE drops all tables in the database and deletes thedatabase. Be very careful with this statement! To use DROP DATABASE,you need the DROP privilege on the data...
The MySQL DROP TABLE StatementThe DROP TABLE statement is used to drop an existing table in a database.SyntaxDROP TABLE table_name; Note: Be careful before dropping a table. Deleting a table will result in loss of complete information stored in the table!
It is executed using the following syntax: sql DROP INDEX index_name ON table_name; Powered By In this syntax, `index_name` is the name of the index you want to remove, and `table_name` is the table from which the index will be dropped. Examples 1. Basic Drop Index sql DROP ...
mysql> SHOW TABLES LIKE 'T%'; +---+ | Tables_in_mydb (T%) | +---+ | Testing | +---+ Created, non-temporary tables can be shown using theSHOW TABLESsyntax. We can restrict the tables shown using theLIKEclause. In our case, we show all tables that begin with T. mysql> DR...
MySQL DROP TABLE语句删除表 Summary: in this tutorial, we will show you how to remove existing tables using theMySQL DROP TABLEstatement. MySQL DROP TABLE statement syntax In order to remove existing tables, you use the MySQLDROP TABLEstatement. The syntax of theDROP TABLEis as follows:...