mysql-Mysql中com.ExecuteScalar(); 为什么先转为long再int？？
- WBOYOriginal
- 2016-06-06 09:35:581431browse
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：
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