When calling DbContext.SaveChanges, I get a DbUpdateException:An unhandled exception of type 'System.Data.Entity.Infrastructure.DbUpdateException' occurred in EntityFramework.dll. Additional information: An error occurred while updating the entries.…

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…

公众号上转的满天飞的一篇文章,MySQL优化相关的,无意中瞄到一句“尽量使用TIMESTAMP而非DATETIME”,之前对TIMESTAMP也不太熟悉,很少使用,于是查了一下两者的区别. 其实,不管在SQL Server中还是MySQL中,“尽量使用TIMESTAMP而非DATETIME”都是有问题的. 在SQL Server中的TIMESTAMP SQL Server中,TIMESTAMP是ROWVERSION的同义词,或者说是别名,TIMESTAMP或者ROWVERSION是什么鬼? MS…

SQL Server Reporting Services versions 2000 and 2005 (SSRS) has many powerful features. SSRS has a well-designed data access engine, a great set of layout tools, and an excellent expression system for creating complex formulas. While the expression s…

P6 Professional Installation and Configuration Guide (Microsoft SQL Server Database) 16 R1       May 2016 Contents About This Guide...................................................................................... 11 Shared Topics in This Guide .…

SQL Server Database Backup and Restore in C# Syed Noman Ali Shah,                          7 Feb 2015                                      CPOL    3.82 (6 votes) 1 2 3 4 5 3.82/5 - 6 votes μ 3.82, σa 2.09 [?]   Rate: Add a reason or comment to your v…

SQL Server Blog Official News from Microsoft’s Information Platform https://blogs.technet.microsoft.com/dataplatforminsider/2016/12/16/sql-server-on-linux-how-introduction/ This post was authored by Scott Konersmann, Partner Engineering Manager, SQL…

一. 问题 最近.Net Core程序部署到服务器,采用EF6.本地数据库是SQL server 2016,服务器数据库安装的是SQL server 2008 R2,在用到分页查询时报错如下: { "Depth": 0, "ClassName": "", "Message": "Incorrect syntax near 'OFFSET'.\r\nInvalid usage of the option NEXT in…

sql server时间戳timestamp 在SQL Server中联机丛书是这样说的: SQL Server timestamp 数据类型与时间和日期无关.SQL Server timestamp 是二进制数字,它表明数据库中数据修改发生的相对顺序.实现 timestamp 数据类型最初是为了支持 SQL Server 恢复算法.每次修改页时,都会使用当前的 @@DBTS 值对其做一次标记,然后 @@DBTS 加1.这样做足以帮助恢复过程确定页修改的相对次序,但是 timestamp 值与时…

腾讯云图片鉴黄集成到C#   官方文档:https://cloud.tencent.com/document/product/641/12422 请求官方API及签名的生成代码如下: public class TencentCloundPicHelper { /// <summary> /// 发送Post请求腾讯云 /// </summary> public string SendPost(string postDataStr) { var url = @"http:/…