网站介绍:文章浏览阅读393次。一. SQL语言分类:数据查询语言:DQL(data duery language):SELECT , WHERE, ORDER BY, GROUP BY, HAVING数据定义语言:DDL(data definition language):CREATE, ALTER, DROP数据操作语言:DML(data manipulation language):INSERT, UPDATE, DELETE事务处理语言:TPL(transaction PROCESS language):COMMIT, R_salary between 6000 and 10000
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