这是由于你没有删除、创建数据库的权限 把SQL文件中的create database这条SQL删除就行了
ERROR 1007 (HY000): Can't create database 'test_db'; database exists 提示不能创建“test_db”数据库,数据库已存在。MySQL 不允许在同一系统下创建两个相同名称的数据库。 可以加上IF NOT EXISTS从句,就可以避免类似错误,如下所示: mysql> CREATE DATABASE IF NOT EXISTS test_db; Query OK, 1 row ...
在SQL中,创建数据库并检查其是否已经存在的正确语法是使用CREATE DATABASE IF NOT EXISTS命令。你提供的命令create database db1 if not exist db1存在一些语法错误,正确的命令应该是: sql CREATE DATABASE IF NOT EXISTS db1; 下面是对这个命令的解释: CREATE DATABASE:这是SQL中用于创建新数据库的命令。 IF...
if not exists dallas; Query OK, 1 row affected (0.14 sec) mysql> However I saw that error when I tried to drop a database and verified that into the database directory there is a directory called comm, could you please verifiy into your data directory if exists a directory with that ...
When I try to connect to a non-existing database with hyphen in the name, the create query failed because the name is not quoted.How to repeat:Connect to a non-existing database with hyphen in name and createDatabaseIfNotExist set to true. Example: jdbc:mysql://localhost:3306/my-db?
Step 2: CREATE DATABASE IF NOT EXISTS Let’s create a non-existing database named “exp_db” via the following command: SELECT 'CREATE DATABASE exp_db' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'exp_db')\gexec ...
如果不存在文件的默认字符集UTF8 ` `整理utf8_g创建模式
publicclassCreateDatabaseIfNotExists<TContext> :System.Data.Entity.IDatabaseInitializer<TContext>whereTContext:DbContext Type Parameters TContext The type of the context. Inheritance Object CreateDatabaseIfNotExists<TContext> Implements IDatabaseInitializer<TContext> ...
本文介绍CREATE DATABASE语法与示例,以及如何在DMS控制台创建数据库。 说明 每个集群可创建数据库的最大值为2048。 操作步骤 在SQL INFORMATION_SCHEMA页签下,在SQL Console中输入CREATE DATABASE语句创建数据库。 语法:CREATE DATABASE [IF NOT EXISTS] $db_name 参数说明:db_name:数据库名。以小写字符开头,可...
添加没你备份的那段 insert into db_table_1 select FROM db_table_2 WHERE 1=1 AND datetime BETWEEN date1 AND date2.