SQL SERVER中表变量之妙用

The Effects of Table Variables in SQL SERVER

Table是SQL SERVER中一种特殊的数据类型,其生命周期短,具有表特性,在解决复杂的实际问题时有着非常重要的作用.该文以企业工资管理系统的开发为切入点,简单介绍了表变量的概念、特点,重点介绍了表变量在员工月工资核算模块中的应用.本系统经过测试已经上线运行,经实践证明,在存储数据量不是特别大的情况下,合理利用表变量可以有效的提高系统执行效率.

Table is a special kind of data type in SQL Server,and has the characteristic of short life cycle and table. Table variables can play an important role in solving complex problems if the flexible use of good.This paper takes the enterprise wage management system as an example to introduce the concept and characteristics of the table variable,and mainly introduces the application of the table variable in the employee＇s monthly salary calculation module. The enterprise wage management system has been running.Proved by practice,table variables can improve the efficiency of system execution if the amount of data is not particularly large.