mysql-Mysql中com.ExecuteScalar(); 为什么先转为long再int？？
- WBOYOriginal
- 2016-06-06 09:35:581450browse
mysqlsqlc#
Mysql中int sum=(int)(long)com.ExecuteScalar(); 为什么好先转为long再int？？
MySqlCommand com=new MySqlCommand("SELECT COUNT(*) from student",conn);
int sum=(int)(long)com.ExecuteScalar();
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：mysql语句出现数据库出现问题Next article：阿里云-两台机器的mysql数据同步