Top 10 steps to optimize data access in SQL Server

在C#的学习中,操作数据库是比较常用的技术,而access和sql server 数据库的操作却有着不同.那么,有哪些不同呢? 首先,需要引用不同的类.因为有着不同的数据引擎. access:using System.Data.OleDb; sql server:using System.Data.SqlClient; 下面是我写的access和sql 数据库操作的两个类: 1 //1.操作sql数据库的类 2 public class DBOperSQL1 3 { 4 public stati

C#连接六类数据库的代码集 本文列出了C#连接Access.SQL Server.Oracle.MySQL.DB2和SyBase六种不同数据库的程序源码和需要注意的点. 1.C#连接Access 程序代码: Code using System.Data;using System.Data.OleDb; .. string strConnection="Provider=Microsoft.Jet.OleDb.4.0;"; strConnection+[email protected]&

Dynamic Data Masking (DDM) is a new security feature in Microsoft SQL Server 2016 and Azure SQL DB. The main documentation is here(also see link under Resources at end). This post is a quick how-to intro to DDM, including applying it in a database an

样表如下: Student ID sName Subject Score 1 张三 Chinese 80 2 张三 Math 90 3 张三 English 85 4 李四 Chinese 85 5 李四 Math 92 6 李四 English 82 Access: TRANSFORM Avg(Student.Score) AS ScoreOfAvgSELECT Student.sNameFROM StudentGROUP BY Student.sNamePIVOT Student.Subje

一.基本原理 请查看这个网址,讲得灰常详细:http://www.jeffkit.info/2010/01/476/ 二.实现步骤 1.安装linux下SQL Server的驱动程序 安装Freetds,不要使用apt-get install 来安装,因为源里的版本不一定是新的,建议使用stable版本, 下载源码手工编译安装,因为有好些参数需要在编译中指定的. 执行以下命令: tar zfvx freetds-stable.tgz cd freetds-* ./configure --pref

在ACCESS中LIKE的用法Access里like的通配符用法是这样: “?”表示任何单一字符: “*”表示零个或多个字符: “#”表示任何一个数字 所以应该是: select * from databasename where fieldname like '*XX*' 在SQL SERVER 里是用%表示零个或多个字符: select * from databasename where fieldname like '%XX%'

DECLARE @geog GEOGRAPHY; DECLARE @geom GEOMETRY; SET @geom = GEOMETRY::STGeomFromText('POLYGON ((-99.213546752929688 19.448402404785156, -99.2157974243164 19.449802398681641, -99.2127456665039 19.450002670288086, -99.213546752929688 19.44840240478515

2013 Top 10 List   A1-Injection Injection flaws, such as SQL, OS, and LDAP injection occur when untrusted data is sent to an interpreter as part of a command or query. The attacker's hostile data can trick the interpreter into executing unintended co

https://support.microsoft.com/en-us/kb/904803 Character data is represented incorrectly when the code page of the client computer differs from the code page of the database in SQL Server 2005 Email Print SYMPTOMS Consider the following scenario: In