mysql create database if exists
CREATE DATABASE | SCHEMA} [IF NOT EXISTS] db_name [create_option] ... create_option: [DEFAULT] CHARACTER SET [=] charset_name | COLLATE ... ,CREATE DATABASE | SCHEMA} [IF NOT EXISTS] db_name [create_option] ... create_option: [DEFAULT] CHARACTER SET [=] charset_name | COLLATE ... , When the IF NOT EXISTS clause is used, MariaDB will return a warning instead of an error if the specified database already ... ,2012年6月17日 — If you just need to know if a db exists so you won't get an error when you try to create it, simply use (From here): CREATE DATABASE IF NOT ... ,The IF NOT EXISTS is an optional clause of the statement. The IF NOT EXISTS clause prevents you from an error of creating a new database that already exists in the database server. You cannot have 2 databases with the same name in a MySQL database server.,The database name must be unique within the MySQL server instance. If you try to create a database with a name that already exists, MySQL issues an error. ,2016年10月31日 — Here is the example in a helper (permanent) database. That db's name is permanent. One time db create: create schema permanent;. ,CREATE DATABASE IF NOT EXISTS mytestdb;. 执行此语句后，MySQL返回一条消息，通知新数据库是否已成功创建。 显示数据库. SHOW DATABASES 语句 ... ,2016年10月30日 — I have a T-SQL query which create database if it does not exist yet: 我有一個T-SQL查詢,如果它還不存在,它會創建數據庫: IF (NOT EXISTS ... ,2019年7月9日 — CREATE DATABASE IF NOT EXISTS blog DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;. 2. 選擇資料庫. 在MySQL中， ...
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 mysql create database if exists 相關參考資料
13.1.11 CREATE DATABASE Statement - MySQL :: Developer ...
CREATE DATABASE | SCHEMA} [IF NOT EXISTS] db_name [create_option] ... create_option: [DEFAULT] CHARACTER SET [=] charset_name | COLLATE ... https://dev.mysql.com 13.1.12 CREATE DATABASE Statement - MySQL :: Developer ...
CREATE DATABASE | SCHEMA} [IF NOT EXISTS] db_name [create_option] ... create_option: [DEFAULT] CHARACTER SET [=] charset_name | COLLATE ... https://dev.mysql.com CREATE DATABASE - MariaDB Knowledge Base
When the IF NOT EXISTS clause is used, MariaDB will return a warning instead of an error if the specified database already ... https://mariadb.com How to check if mysql database exists - Stack Overflow
2012年6月17日 — If you just need to know if a db exists so you won't get an error when you try to create it, simply use (From here): CREATE DATABASE IF NOT ... https://stackoverflow.com Manage Databases in MySQL - MySQL Tutorial
The IF NOT EXISTS is an optional clause of the statement. The IF NOT EXISTS clause prevents you from an error of creating a new database that already exists in the database server. You cannot have 2 d... https://www.mysqltutorial.org MySQL CREATE DATABASE - Creating a New Database in ...
The database name must be unique within the MySQL server instance. If you try to create a database with a name that already exists, MySQL issues an error. https://www.mysqltutorial.org MySQL create database if not exist - Stack Overflow
2016年10月31日 — Here is the example in a helper (permanent) database. That db's name is permanent. One time db create: create schema permanent;. https://stackoverflow.com MySQL创建与删除数据库- MySQL教程™ - 易百教程
CREATE DATABASE IF NOT EXISTS mytestdb;. 执行此语句后，MySQL返回一条消息，通知新数据库是否已成功创建。 显示数据库. SHOW DATABASES 语句 ... https://www.yiibai.com MySQL創建數據庫（如果不存在） - MySQL create database if ...
2016年10月30日 — I have a T-SQL query which create database if it does not exist yet: 我有一個T-SQL查詢,如果它還不存在,它會創建數據庫: IF (NOT EXISTS ... https://www.itdaan.com 成為合格的數據管理者，你應該掌握的MySQL基本操作，學 ...
2019年7月9日 — CREATE DATABASE IF NOT EXISTS blog DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;. 2. 選擇資料庫. 在MySQL中， ... https://kknews.cc |