sql语言的分类:(1)ddl(数据定义语言)1,创建新的数据库createdatabase
不安装em工具.这里输入sys和sy
course_name 值为"database",course_grade 值为 3,info值为"mysql"
show command to see if the database was successful .enter.
database 数据库名;例如:create database class;122
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