For some reason few of the SQL tables in my .Net Core project has a primary key column (varchar) value set by an after insert trigger. see the trigger below. USE [MyDb] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER TRIGGER [Lookup].[MyTable_Insert] ON [Lookup].[MyTable] AFTER INSERT AS SET NOCOUNT ON UPDATE Lookup.MyTable SET ID = convert(varchar,ID_AUTO) ID - Primary Key,
出于某种原因，我的.Net Core项目中很少有SQL表具有由插入后触发器设置的主键列（varchar）值。 看下面的触发器。 USE [MyDb] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO ALTER TRIGGER [Lookup].[MyTable_Insert] ON [Lookup].[MyTable] AFTER INSERT AS SET NOCOUNT ON UPDATE Lookup.MyTable SET ID = convert(varchar,ID_AUTO) ID - 主键，varchar，不为null ID_AUTO - smallint，非空，标识列
I am trying to display data (bank name) from database in a label. Each user has four bank id in rate table. I want to retrieve their name from bank table. The user id is the session variable. The query command is correct but when I add session variable the error is raised. Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near '='. Source Error: Line 26:
我正试图在标签中显示数据库中的数据（银行名称）。 每个用户在费率表中有四个银行ID。 我想从银行表中找回他们的名字。 用户标识是会话变量。 查询命令是正确的，但是当我添加会话变量时会引发错误。 异常详细信息：System.Data.SqlClient.SqlException：'='附近的语法不正确。 源错误： 第26行：str =“select bank_name from bank，rate，[user] where（（bank.bank_id = rate.bank_id）and（user.user_id
I have a simple C# function that should create a new Microsoft SQL database called Database2.mdf. My Problem: The function fails to create the database & I am unsure why? I have copied code from MSDN that demonstrates how to create a database but I am not sure my SqlConnection string or my SQLCommand strings are correct? The error that occurs is: {"A network-related or instance-sp
我有一个简单的C＃函数，它应该创建一个名为Database2.mdf的新Microsoft SQL数据库。 我的问题：该功能无法创建数据库＆我不确定为什么？ 我从MSDN复制了演示如何创建数据库的代码，但我不确定我的SqlConnection字符串或我的SQLCommand字符串是否正确？ 发生的错误是： {“与SQL Server建立连接时发生了网络相关或特定于实例的错误，找不到服务器或无法访问服务器，请确认实例名称正确，并且SQL Server已配置为允许远程连
I am trying to select food_ItemName and food_UnitPrice from t_Food table in SQL Server 2005 using C# and VS 2008. I have the following code: private SqlConnection connection; private void GetDatabaseConnection() { string connectionString = @"Server = RZS-F839AD139AASQLEXPRESS; Integrated Security = SSPI; Database = HotelCustomerManagementDatabase";
我正尝试使用C＃和VS 2008从SQL Server 2005中的t_Food表中选择food_ItemName和food_UnitPrice 。 我有以下代码： private SqlConnection connection; private void GetDatabaseConnection() { string connectionString = @"Server = RZS-F839AD139AASQLEXPRESS; Integrated Security = SSPI; Database = HotelCustomerManagementDatabase"; connection = new SqlConnecti
I'm developing an android application .. which will send location data to a web service to store in the server database. In Java: I've used this protocol so the URI is: HTTP request instead of REST HttpPost request = new HttpPost("http://trafficmapsa.com/GService.asmx/GPSdata? lon="+Lon+"&Lat="+Lat+"&speed="+speed); In Asp.net (c#) web service will be: [WebMethod] p
我正在开发一个Android应用程序..它将位置数据发送到Web服务以存储在服务器数据库中。 在Java中：我使用了这个协议，所以URI是：HTTP请求，而不是REST HttpPost request = new HttpPost("http://trafficmapsa.com/GService.asmx/GPSdata? lon="+Lon+"&Lat="+Lat+"&speed="+speed); 在Asp.net（c＃）web服务将是： [WebMethod] public CountryName GPSdata(Double Lon, Double Lat, Double speed) { String
I have a query that I am executing in C# that is taking way too much time: string Query = "SELECT COUNT(HISTORYID) FROM HISTORY WHERE YEAR(CREATEDATE) = YEAR(GETDATE()) "; Query += "AND MONTH(CREATEDATE) = MONTH(GETDATE()) AND DAY(CREATEDATE) = DAY(GETDATE()) AND USERID = '" + EmployeeID + "' "; Query += "AND TYPE = '5'"; I then use SqlCommand Command = new SqlCommand(Query, Connection) and Sql
我有一个查询，我在C＃中执行的时间太长了： string Query = "SELECT COUNT(HISTORYID) FROM HISTORY WHERE YEAR(CREATEDATE) = YEAR(GETDATE()) "; Query += "AND MONTH(CREATEDATE) = MONTH(GETDATE()) AND DAY(CREATEDATE) = DAY(GETDATE()) AND USERID = '" + EmployeeID + "' "; Query += "AND TYPE = '5'"; 然后，我使用SqlCommand Command = new SqlCommand（Query，Connection）和SqlDataReader Reader = Command.Exec
I have a CSV file and I have to insert it into a SQL Server database. Is there a way to speed up the LINQ inserts? I've created a simple Repository method to save a record: public void SaveOffer(Offer offer) { Offer dbOffer = this.db.Offers.SingleOrDefault ( o => o.offer_id == offer.offer_id); // add new offer if (dbOffer == null) {
我有一个CSV文件，我必须将其插入到SQL Server数据库中。 有没有办法加快LINQ插入？ 我创建了一个简单的Repository方法来保存记录： public void SaveOffer(Offer offer) { Offer dbOffer = this.db.Offers.SingleOrDefault ( o => o.offer_id == offer.offer_id); // add new offer if (dbOffer == null) { this.db.Offers.InsertOnSubmit(offer);
I'm having an issue with a trigger that inserts a value into the same tabled on a linked server. Here is the trigger in question ... USE [localDB] GO /****** Object: Trigger [dbo].[INS_New_Row] Script Date: 05/26/2009 10:50:56 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO -- ============================================= -- Author: <Author,,Name> -- Create date: <
我遇到了一个触发器问题，它将值插入到链接服务器上的相同表中。 这是触发器... USE [localDB] GO /****** Object: Trigger [dbo].[INS_New_Row] Script Date: 05/26/2009 10:50:56 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO -- ============================================= -- Author: <Author,,Name> -- Create date: <Create Date,,> -- Description: <Description,,> -- ==
Does anyone know if there is a way to do something like Nhibernate's ReferencesAny in EntityFramework? Background I've been tasked with updating an application that uses NHibernate (specifically version 2.1.2.4000). The company would really prefer to go with Entity Framework going forward. Ideally I would not like to have to change the Database schema (deal with DBA's), but I
有谁知道是否有办法像EntityFramework中的Nhibernate的ReferencesAny一样？ 背景 我的任务是更新使用NHibernate的应用程序（特别是版本2.1.2.4000）。 该公司真的更愿意继续推进实体框架。 理想情况下，我不想更改数据库模式（处理数据库管理员的问题），但我遇到问题，弄清楚如何将使用ReferencesAny的实体映射到实体框架中类似的东西。 我的Nhibernate映射参考： //this is in a Spectator Mapping class, which isn't
I'm developing an application that among other things, enumerates all input audio devices (using SetupAPI ) and then for each audio device, it lists all input audio lines (using winmm.dll ). Basically, the way I'm relating the two is getting the device path from the audio device and then using waveInMessage to compare the audio line's device path. Now, I want to be able to do the
我正在开发一个应用程序，其中包括枚举所有输入音频设备（使用SetupAPI ），然后为每个音频设备列出所有输入音频行（使用winmm.dll ）。 基本上，我将两者联系起来的方式是从音频设备获取设备路径，然后使用waveInMessage比较音频线路的设备路径。 现在，我希望能够对Windows默认的[输入]音频线（ WAVE_MAPPER ）进行相同的操作。 问题是使用waveInGetDevCaps的WAVE_MAPPER返回“Microsoft Sound Mapper”，使用waveInMessag