摘要： select * from table where data_1 like '_[a|b]%'意思是查询表中data_1字段第二个字符为a或b的所有数据 阅读全文

摘要： SDK: Software Development Kit (SDK) 软件开发工具包 IDE: Integrated Development Environment (IDE) UI: User Interface (UI) 用户界面 OLE: Object Linking and Embeddin... 阅读全文

摘要： delete the file,you can see the document about del and rddel:deletedel [drive:][path:]parameters:/p before delete file ,will give you words/f must del read only file/s del all files from child tree/q ... 阅读全文