目录SQL语句中要不要加单引号?SQL不使用引号、使用单引号或双引号的区别加引号和不加引号有什么区别?SQL中的单引号和双引号有区别吗?mysql 参考手册总结SQL语句中要不要加单引号?
How can I get the Timezone offset in Objective-C (for iPhone OS 3)? For example, GMT -5 is US Eastern Time. I wan开发者_如何学编程t the -5 part of it. How would I do so?[[NSTimeZone localTimeZone] se