将常用的或很复杂的工作，预先用SQL语句写好并用一个指定的名称存储起来, 那么以后要叫数据库提供与已定义好的存储过程的功能相同的服务时,只需调用execute,即可自动完成命令。 -Will be commonly used or very complicated to work with SQL statement written in advance and specify the name of a stored, then later asked to provide a database stored procedure has a good definition of the functions of the same service, simply call the execute, can be auto-complete command.