Abstract:This paper introduces the type of connections, the operation steps of connections, and the connection syntax in SQL.
It analyzes how to improve the query efficiency based on the multi-table connection, and further explains with the examples of the
student database.
姚曦. SQL 数据库查询效率的研究[J]. 电脑与电信, 2016, 1(7): 108-109.
Yao Xi. Research on the Query Efficiency of SQL Database. Computer & Telecommunication, 2016, 1(7): 108-109.