CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name #SCHEMA是DATABASE的同义词 [IF NOT EXITTS]可防止建库是已经存在报错 [create_specification] ... #可指定数据库的特征 create_specification: [DEFAULT] CHARACTER SET [=] charset_name #指定字符集 | [DEFAULT] COLLATE [=] collation_name #specifi...
A database in MySQL is implemented as a directory containing files that correspond to tables in the database. Because there are no tables in a database when it is initially created, the CREATE DATABASE statement creates only a directory under the MySQL data directory and the db.opt file. ...
A database in MySQL is implemented as a directory containing files that correspond to tables in the database. Because there are no tables in a database when it is initially created, theCREATE DATABASEstatement creates only a directory under the MySQL data directory. Rules for permissible databa...
URL: https://dev.mysql.com/doc/refman/8.0/en/create-database.html通过HELP命令,我们查看到数据库创建命令的语句和语法格式。Syntax:CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name[create_option] …create_option: [DEFAULT] {CHARACTER SET [=] charset_name| COLLATE [=] collation_name| ENCRY...
1 Create database语句 create database语句是在MySQL实例上创建一个指定名的数据库,create schema语句的语义和create database是一样的。先来看下create的语法: Syntax:CREATE{DATABASE|SCHEMA} [IFNOTEXISTS] db_name [create_specification] ... create_specification: ...
$create = mysql_query ("CREATE DATABASE IF NOT EXISTS moviesite") or die (mysql_error); //make sure our recently created database is the active one mysql_select_db("moviesite"); Sorry, you can't reply to this topic. It has been closed....
In this blog, we provide a comprehensive guide with practical examples of MySQL indexes. Explore MySQL CREATE INDEX, functional indexes and more in MySQL 8.0.
CREATE DATABASE 语句用于在 MySQL 中创建数据库。语法 CREATE DATABASE database_name为了让 PHP 执行上面的语句，开发者必须使用 mysql_query() 函数。此函数用于向 MySQL 连接发送查询或命令。CREATE TABLE table_name(column_name1 data_type,column_name2 data_type,column_name3 data_type,...)为了执行此...
GRANTPRIVILEGEONdatabase.tableTO'username'@'host'; Copy ThePRIVILEGEvalue in this example syntax defines what actions the user is allowed to perform on the specifieddatabaseandtable. You can grant multiple privileges to the same user in one command by separating each with a comma. You ...
IDENTIFIED BY 'password' DATA DIRECTORY='/home/mysql/clonetest'; ERROR 1007 (HY000): Can't create database '/home/mysql/clonetest'; database exists Suggested fix: I understand that we place clone_status and clone_progress files in side #clone directory which reside inside mentioned DATA ...