sql-server-ce

问题 Does anyone know where I can find a list of supported features for SQL Server Compact Edition? I am interested in using the new version with my web app but am trying to determine if it can do what I need? specifically I want to know if it can support views and stored procedures but the microsoft site was futile. thanks in advance Edit: I looked at this SQL Server Compact Edition 3.5 but it was not helpful to me. 回答1: SQL Server CE 4 does not support stored procedures, as you can read in this

问题 I have the following query: var nodes = DB.Nodes .Where(x => x.Lon > 486400 && x.Lon < 486600 && x.Lat > 5025100 && x.Lat < 5025300) .Join(DB.RoadNodes, x => x.Id, y => y.NodeId, (x, y) => x); This searches all the nodes in DB.Nodes near a certain location, then it checks whether the node is a road junction by taking a join with DB.RoadNodes ; however, this takes several seconds which is slow. It looks like I have to do two things here: Optimize the Where part which takes ~5 seconds on its

问题 We need to embbed SQLServer CE in the installer of our application in order to set it as the default backend. Is there any merge module or something to include the SQLServer CE installer in our installer? Or is it as simple as including the dlls? Thanks 回答1: Just include the DLL in the correct folder, and prepare app.config - see this blog post: http://erikej.blogspot.com/2011/02/using-sql-server-compact-40-with.html 来源： https://stackoverflow.com/questions/6331295/embedding-sqlserver-ce-in-an

问题 I'm fairly new to c# and just now started working with databases. I made a local database in my project folder, when I click properties on the database I get "Connection string" as: Data Source="C:\Users\Documents\Visual Studio 2012\Projects\DataBaseTest\MyDatabase#1.sdf" My question is simple, how do I create a connection string using that line? cause writing this generates an error for some reason. SqlConnection con = new SqlConnection(Data Source="C:\Users\Documents\Visual Studio 2012

问题 I have a SQL Server Compact (3.5) database with a nvarchar column with lots of data that looks like 000000000011070876 . I'm trying to copy that data to another column that is a BIGINT , using the CONVERT function. My first try was: UPDATE Mobile_Reservation SET SAPNo = CONVERT(BIGINT, ItemNumber) If I run this query in SQL Server 2008 R2, it works fine. 000000000011070876 becomes 11070876 . Unfortunately, in SQL Server CE, it becomes 0. Apparently it cannot handle the leading zeros. But it

问题 I have created a SQL Server Compact Database ( .sdf file) and I want to be connected to it for do some insert , delete ... . This is my creation code for it: if (File.Exists(dbfilename)) File.Delete(dbfilename); string connectionString = "Data Source=" + dbfilename + """; SqlCeEngine engine = new SqlCeEngine(connectionString); engine.CreateDatabase(); engine.Dispose(); SqlCeConnection conn = null; try { conn = new SqlCeConnection(connectionString); conn.Open(); SqlCeCommand cmd = conn

问题 I have been looking at solutions but don't know where I am doing it wrong. But I am doing it for the first time. I have a class Students class Students { public Image photo { get; set; } public bool AddStudent(Students _student) { Settings mySettings = new Settings(); SqlCeConnection conn = new SqlCeConnection(mySettings.StudentsConnectionString); SqlCeCommand cmd = new SqlCeCommand(); cmd.CommandType = System.Data.CommandType.Text; cmd.Connection = conn; cmd.CommandText = "insert into

问题 I have a problem with inserting to my SQL CE Database. I have wrote some code, then when I needed a DB, I have right clicked on projected, added new item, Local Database , after that it offered me to choose a datamodel - I selected 'dataset'. This has created a DB for me, under Server Explorer on my left, and same .sdf file is seen on my right, in solution explorer. I start my application, I run an insert query, it gives me output that insert was successful, I see that .sdf file under root

问题 Is it possible to attach multiple DBs to SQL CE 3.5 (Compact edition) e.g. MasterData.sdf, Orders.sdf and apply queries against them e.g.: select Orders.iOrderID, Orders.cItemID, MasterData.cItemDesc from Orders.CustomerOrder as Orders left join MasterData.Items as Items on Orders.cItemID = Items.cItemID I need this because of sync optimization (many small databases vs. one big database). Is there any other solution to merge two (many) sdf-s into one ? 回答1: No, this is not possible - but you

问题 We are trying to debug through a SQL Server Compact issue on a Windows 7 Enterprise RTM (64-bit) desktop running the .NET Framework 3.5, SP1. The application is crashing consistently, and we are trying to set up .NET Framework debugging for Visual Studio 2008, SP1. Using the scattered resources around the Internet, we set the options: Symbol Server = http://referencesource.microsoft.com/symbols Menu Tools -> Options -> Debugging -> Just My code = Disabled Menu Tools -> Options -> Debugging ->