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BroadLeaf 下定义ORM对象:Province,City,Area
要点:BroadLeaf框架下定义ORM对象需要先定义一个接口, 然后在persistence-unit 的配置中进行声明,如不声明会报错:no persistent classes found for query classIProvince:import java.io.Serializable...
分类:其他好文   时间:2014-09-23 12:42:24    阅读次数:285
Fix “Windows cannot access the specified device path or file” Error
http://helpdeskgeek.com/help-desk/windows-cannot-access-the-specified-device-path-or-file/Method 1 – Windows Server 2003 Terminal ServicesFirstly, if ...
分类:数据库   时间:2014-09-23 11:05:04    阅读次数:234
【MongoDB】The high query operation of MongoDB(三)
1, Sort  Needless to say, mongodb also support to sort data. THe positive one means sorting by asc order and negetive means by desc. 2. Group The grammar of group: Description Of Argument:...
分类:数据库   时间:2014-09-23 02:47:33    阅读次数:267
【MongoDB】The Regex Expression query of MongoDB
In the past two blogs, the topic mainly focus on...
分类:数据库   时间:2014-09-23 01:28:03    阅读次数:283
Java实例对象间的比较(实现Comparable接口)
intcompareTo(To)Compares this object with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is le...
分类:编程语言   时间:2014-09-22 23:21:13    阅读次数:173
逗号导致hive报“SemanticException Error in parsing”错误
> select p.dt, p.cookie_qunar_global, p.refer_domain, p.kwid, p.query_word, p,traffic_type--, p.page_type > from tmp_vincent_dw_beacon_path_data_0...
分类:其他好文   时间:2014-09-22 18:13:52    阅读次数:14385
android LoaderManger加载数据Tip
要查看LoaderManager的具体介绍请看博客: LoaderManager介绍 使用时发现不管怎么调用getLoaderManager().restartLoader(LOADER_TYPE_QUERY, null, this);方法,loader就是不执行(在onCreate方法中已注册getLoaderManager().initLoader(LOADER_TYPE_QUERY,...
分类:移动开发   时间:2014-09-22 16:12:42    阅读次数:187
【MongoDB】The high query operation of MongoDB(二)
In the last blog, there are three query condition to be described. In the blog, we wil...
分类:数据库   时间:2014-09-22 03:37:02    阅读次数:255
【MongoDB】The high Query operation of MongoDB(一)
In the last blog, we talked about the basic operation of MongoDB, including insert, query, remove and update. Now in this blog, we will further hava a good understanding of  querying operation.  At f...
分类:数据库   时间:2014-09-22 01:35:41    阅读次数:233
SQL语言
SQL(Structured Query Language)结构化查询语言,是一种高度非过程化的语言,其灵活易用完成核心操作仅需要9个动词,对有一点编程基础的人来说很容易上手。在我们做过的机房收费系统中主要用它来创建数据库并完成系统和数据库的交互。 基本功能:       数据定义(Data Definition):建立数据库和表的结构       数据管理(Data Management)...
分类:数据库   时间:2014-09-22 00:28:11    阅读次数:228
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