数据查询作为数据库操作的重点，也一直是学习者的学习重点，多表查询则是其中不可回避的重点与难点。本文通过SQL语句、视图和存储过程三种方式实现多表查询的问题，探讨三种方式的利弊。

As the key point of database operation, data query has always been the focus of learning, multi table query is one of the most important and difficult points to learn. This paper discusses on the advantages and disadvantages of three ways to query in multi table: SQL statement, view and storage procedure.