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class Program { public string Lastmonth(string s ) { int a =int.Parse(s.Substring(0,4)); int b =int .Parse( s.Substring(4, 2)); if (b<=0||b>12 ) { ret 阅读全文
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存储过程和自定义函数的区别 Difference between Procedure and User Defined Function 首先来看一下存储过程和自定义函数的概念 一、 什么是存储过程? 存储过程可以使得对数据库的管理、以及显示关于数据库及其用户信息的工作容易得多。存储过程是... 阅读全文
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select * from t_Student where S_sex like '[女]' and S_class = 95031select * from t_Student order by S_class descselect * from t_Score order by C_no asc... 阅读全文
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select S_name,S_sex,S_class from t_Studentselect * from t_Teacherselect * from t_Studentselect * from t_Score where S_chengji between 60 and 80select ... 阅读全文