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01.Number 对象
代表数值数据类型和提供数值常数的对象。numObj = new Number(value)参数numobj必选项。要赋值为 Number 对象的变量名。value必选项。Required. The numeric value of the Number object being created.value 参数是...查看完整版>>Number 对象02.如何利用row_number函数处理重复数据
创建测试表person CREATE TABLE person( sn varchar(10), name varchar(50));go插入测试重复数据 insert into person values('1','guoqiang1');insert into person values('1','guoqiang1');insert into perso...查看完整版>>如何利用row_number函数处理重复数据03.视图上含有row_number分析函数没法走索引
问题：有如下的sql性能差： select rowid,PKG_LIFE_QUERY_FUNC.F_GET_DEPOSIT_ACCOUNT_VALUE(DEPOSIT_ID,ACCOUNT_CODE) as ACCOUNT_VALUE,PKG_LIFE_QUERY_FUNC.F_GET_DEPOSIT_ACCOUNT_VALUE(DEPOSIT_ID,ACCOUNT_CODE...查看完整版>>视图上含有row_number分析函数没法走索引04.Oracle中Number(p,s)的意义
number(p,s)p:1~38s:-84~127 p>0，对s分2种情况分析：1. s>0精确到小数点右边s位，并四舍五入。然后检验有效数位是否<=p；假如s>p，小数点右边至少有s-p个0填充。2. s<0精确到小数点左边s位，并四舍五...查看完整版>>Oracle中Number(p,s)的意义05.RFC2890 - Key and Sequence Number Extensions to GRE
Network Working Group G. DommetyRequest for Comments: 2890 Cisco SystemsCategory: Standards Track September 2000 Key and Sequence Number Extensions to GREStatus of this Memo This document specifie...查看完整版>>RFC2890 - Key and Sequence Number Extensions to GRE06.RFC1982 - Serial Number Arithmetic
Network Working Group R. ElzRequest for Comments: 1982 University of MelbourneUpdates: 1034, 1035 R. BushCategory: Standards Track RGnet, Inc. August 1996 Serial Number ArithmeticStatus of this Me...查看完整版>>RFC1982 - Serial Number Arithmetic07.RFC1948 - Defending Against Sequence Number Attacks
Network Working Group S. BellovinRequest for Comments: 1948 AT&T ResearchCategory: Informational May 1996 Defending Against Sequence Number AttacksStatus of This Memo This memo provides inform...查看完整版>>RFC1948 - Defending Against Sequence Number Attacks08.GRE的Key和Sequence Number扩展
本备忘录的现状本文档的现状本文当描述了一种供Internet协会采用的Internet标准跟踪协议，尚需对之进行讨论并提出建议以待改进。本协议的标准化进程请参考最新版的“Internet正式协议标准”（STD1）。本文档可以无限...查看完整版>>GRE的Key和Sequence Number扩展09.RFC2916 - E.164 number and DNS
Network Working Group P. FaltstromRequest for Comments: 2916 Cisco Systems Inc.Category: Standards Track September 2000 E.164 number and DNSStatus of this Memo This document specifies an Internet stan...查看完整版>>RFC2916 - E.164 number and DNS10.RFC617 - Note on socket number assignment
Network Working Group Edward Taft (PARC-MAXC)Request for Comments: 617 Feb 1974NIC #21771 A Note on Socket Number Assignment 2INTRODUCTIONIn several current and proposed protocols, as well as in a...查看完整版>>RFC617 - Note on socket number assignment

 

 

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