drop database if exists
IF EXISTS is used to prevent an error from occurring if the database does not exist. If the default database is dropped, the default database is unset (the ... ,IF EXISTS is used to prevent an error from occurring if the database does not exist. If the default database is dropped, the default database is unset (the ... ,IF EXISTS is used to prevent an error from occurring if the database does not exist. If the default database is dropped, the default database is unset (the ... , syntaxsql 複製. -- SQL Server Syntax DROP DATABASE [ IF EXISTS ] database_name | database_snapshot_name } [ ,...n ] [;]. syntaxsql 複製.,跳到 IF EXISTS - Important: When a database is dropped, user privileges on the database are not automatically dropped. See GRANT. IF EXISTS. Use IF ... , In Sql Server 2016, IF EXISTS is the new optional clause introduced in the existing DROP statement. Basically, it checks the existence of the ..., USE master IF EXISTS(select * from sys.databases where name='yourDBname') DROP DATABASE yourDBname CREATE DATABASE ..., ,发生错误，不能删除'drop_database'数据库，该数据库不存在。 mysql> drop database if exists drop_database; Query OK, 0 rows affected, 1 warning (0.00 sec) ,The DROP DATABASE statement allows you to delete one or more databases with the following syntax: DROP DATABASE [ IF EXISTS ] database_name [,database_name2,...]; In this syntax, you specify the name of the database that you want to drop after the DROP DA
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 drop database if exists 相關參考資料
13.1.21 DROP DATABASE Statement - MySQL :: Developer ...
IF EXISTS is used to prevent an error from occurring if the database does not exist. If the default database is dropped, the default database is unset (the ... https://dev.mysql.com 13.1.22 DROP DATABASE Statement - MySQL :: Developer ...
IF EXISTS is used to prevent an error from occurring if the database does not exist. If the default database is dropped, the default database is unset (the ... https://dev.mysql.com 13.1.24 DROP DATABASE Statement - MySQL :: Developer ...
IF EXISTS is used to prevent an error from occurring if the database does not exist. If the default database is dropped, the default database is unset (the ... https://dev.mysql.com DROP DATABASE (Transact-SQL) - Microsoft Docs
syntaxsql 複製. -- SQL Server Syntax DROP DATABASE [ IF EXISTS ] database_name | database_snapshot_name } [ ,...n ] [;]. syntaxsql 複製. https://docs.microsoft.com DROP DATABASE - MariaDB Knowledge Base
跳到 IF EXISTS - Important: When a database is dropped, user privileges on the database are not automatically dropped. See GRANT. IF EXISTS. Use IF ... https://mariadb.com DROP DATABASE IF EXISTS | SqlHints.com
In Sql Server 2016, IF EXISTS is the new optional clause introduced in the existing DROP statement. Basically, it checks the existence of the ... https://sqlhints.com Dropping and recreating databases in Microsoft SQL Server ...
USE master IF EXISTS(select * from sys.databases where name='yourDBname') DROP DATABASE yourDBname CREATE DATABASE ... https://stackoverflow.com MySQL DROP DATABASE - How to Delete a Database in ...
https://www.mysqltutorial.org Mysql命令drop database：删除数据库_C语言中文网
发生错误，不能删除'drop_database'数据库，该数据库不存在。 mysql> drop database if exists drop_database; Query OK, 0 rows affected, 1 warning (0.00 sec) http://c.biancheng.net SQL Server DROP DATABASE Explained By Practical Examples
The DROP DATABASE statement allows you to delete one or more databases with the following syntax: DROP DATABASE [ IF EXISTS ] database_name [,database_name2,...]; In this syntax, you specify the name ... https://www.sqlservertutorial. |