语法: 删表 DROP TABLE Syntax DROP [TEMPORARY] TABLE [IF EXISTS] tbl_name [, tbl_name] ... [RESTRICT | CASCADE] 可一次删除一张或多张表。需具有所删除表上的DROP权限。表定义文件和数据文件均被移除。
To remove existing tables, you use the MySQLDROP TABLEstatement. The syntax of theDROP TABLEis as follows: 1 2 DROP[TEMPORARY]TABLE[IF EXISTS]table_name[,table_name]... [RESTRICT|CASCADE] TheDROP TABLEstatement removes a table and its data permanently from the database. In MySQL, you can...
In order to remove existing tables, you use the MySQLDROP TABLEstatement. The syntax of theDROP TABLEis as follows: DROP [TEMPORARY] TABLE [IF EXISTS] table_name [, table_name] ... [RESTRICT | CASCADE] TheDROP TABLEstatement removes a table and its data permanently from the database. I...
/ DROP TABLE Statement 15.1.32 DROP TABLE Statement DROP [TEMPORARY] TABLE [IF EXISTS] tbl_name [, tbl_name] ... [RESTRICT | CASCADE] DROP TABLE removes one or more tables. You must have the DROP privilege for each table. Be careful with this statement! For each table, it removes...
TheUNDOkeyword, introduced in MySQL 8.0.14, must be specified to drop an undo tablespace. Only undo tablespaces created usingCREATE UNDO TABLESPACEsyntax can be dropped. An undo tablespace must be in anemptystate before it can be dropped. For more information, seeSection 17.6.3.4, “Undo Table...
mysqldropdatabase 很慢mysql中drop的用法 删表DROPTABLE SyntaxDROP[TEMPORARY] TABLE [IF EXISTS] tbl_name [, tbl_name] ... [RESTRICT | CASCADE] 可一次删除一张或多张表。需具有所删除表上的DROP权限。表定义文件和数据文件均被移除。表被删除后表上的用户权限不会被自动删除。参数里表中指定的表名不...
删表DROPTABLE SyntaxDROP[TEMPORARY] TABLE [IF EXISTS] tbl_name [, tbl_name] ... [RESTRICT | CASCADE] 可一次删除一张或多张表。需具有所删除表上的DROP权限。表定义文件和数据文件均被移除。表被删除后表上的用户权限不会被自动删除。参数里表中指定的表名不存在则报错,但对于存在的表仍会删除。可通...
MySql中的SQL语句1 . 数据库创建 : Create database db_name; 数据库删除 : Drop database db_name; 删除时可先判断是否存在,写成 : drop database if exits db_name 2 . 建表 : 创建数据表的语法 : create table table_name (字段1 数据类型 , 字段2 数据类型); 例 : create table mytable (id...
You can also drop databases withmysqladmin. SeeSection 4.8. CREATE TABLESyntax CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)] [table_options] [select_statement] create_definition: col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT] [PRIMAR...
日志表可以使用CREATE TABLE,ALTER TABLE和DROP TABLE语句,但前提是需要先使用对应的开关关闭掉表,不能在使用期间操作(例如:set global general_log=0,然后操作general_log表)。 general_log和slow_log表默认是CSV引擎,使用逗号分割的格式来存放日志记录,CSV数据文件可以很方便地导入其他程序进行处理,例如:excel电子表...