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current_schema参数的用途
用户A包含表TBL,如果用户A将TBL的访问权限给用户B(grant select any table to B),则在用户B中要想引用用户A的表,不使用同义词,则需要用select * from A.TBL; 之所以这里需要使用A.TBL的格式,是因为TBL表属于用户A的schema,做个比喻,schema(译文方案)好比一个容器,存放的是一系列数据库对象,从官方文档的介绍说明: ...
分类:其他好文   时间:2014-10-16 14:30:42    阅读次数:221
关于IDataReader.GetSchemaTable的一些事情
The implementation ofIDataReader.GetSchemaTable()is up to the provider - so it will vary. You can write your own providers and do it any way you want....
分类:其他好文   时间:2014-10-16 09:57:02    阅读次数:195
leetcode - Unique Paths
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the ...
分类:其他好文   时间:2014-10-15 16:02:10    阅读次数:190
LeetCode——Copy List with Random Pointer(带random引用的单链表深拷贝)
问题: A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep ...
分类:其他好文   时间:2014-10-15 15:40:50    阅读次数:262
Change Data template dynamically
1. Attached Property bound to task state. Any change will dynamically set data template.2. Visual State ManagerADataTemplateSelectordoes not respond t...
分类:其他好文   时间:2014-10-15 11:29:00    阅读次数:260
LeetCode Unique Paths
A robot is located at the top-left corner of amxngrid (marked 'Start' in the diagram below).The robot can only move either down or right at any point ...
分类:其他好文   时间:2014-10-15 01:41:29    阅读次数:266
启动页分为4页,最后一页有一个按钮,点击跳转到主页面
代码效果为:启动页分为4页,最后一页有一个按钮,点击跳转到主页面。上代码:- (void)viewDidLoad{ [super viewDidLoad]; // Do any additional setup after loading the view. UIScrol...
分类:其他好文   时间:2014-10-14 14:25:58    阅读次数:223
Convert String to Long
Given a string, write a routine that converts the string to a long, without using the built in functions that would do this. Describe what (if any) li...
分类:其他好文   时间:2014-10-14 13:01:28    阅读次数:201
leetcode第十题--Regular Expression Matching
Problem:Implement regular expression matching with support for '.' and '*'. '.' Matches any single character. '*' Matches zero or more of the precedin...
分类:其他好文   时间:2014-10-14 02:10:07    阅读次数:221
Invalidation queue with "bit-sliceability"
BACKGROUND, FEATURES In a computer system having more than one memory storage facility, a special data integrity challenge can occur. Any computer sys...
分类:其他好文   时间:2014-10-13 23:44:17    阅读次数:297
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