fangtaohbjjxy的专栏

搞了一天做的，精品资源。日期时间可调可选。 使用的时候记得带上全局变量。具体的日期问题没有能解决，做示意完全没有问题。

用于中联his系统 可以用于跟踪数据库中提示的bug信息。追踪定位bug。

可以把前台密码转换为后台密码，后台密码转换为前台密码，非中联HIS用户不要使用。

oracle 调优 文档，武汉支点，大唐集团，甲骨文中国，2012年11月9日， oracle调优知识分享。武汉光谷乐华商务大厦。 英文pdf文档。

oracle数据库，性能调优，2012年11月9号。武汉支点公司分享。

Why I Wrote This Book<br>Queries, queries, queries. My goal from the beginning of this project has not been so much to write a "SQL Cookbook" as to write a "Query Cookbook." I've aimed to create a book comprised of queries ranging from the relatively easy to the relatively difficult in hopes the reader will grasp the techniques behind those queries and use them to solve his own particular business problems. I hope to pass on many of the SQL programming techniques I've used in my career so that you, the reader, will take them, learn from them, and eventually improve upon them; through this cycle we all benefit. Being able to retrieve data from a database seems so simple, yet in the world of Information Technology (IT) it's crucial that the operation of data retrieval be done as efficiently as possible. Techniques for efficient data retrieval should be shared so that we can all be efficient and help each other improve.<br><br>