sql-server-express | 易学教程

“Cannot open user default database. Login failed.” after installing SQL Server Management Studio Express

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I have a database in a local file that is used by a program. The program has limited functionality and I needed to run some quick queries. I installed SQL Server Management Studio Express 2005 (SSMSE), connected to the SQL Server instance, attached the database file, and ran the queries. Now the original program will no longer connect to the database. I receive the error: Cannot open user default database. Login failed. Login failed for user 'MyComputer\MyUserName'. I've gone back into SSMSE and tried to set the default database. I've opened up Security, Logins, BUILTIN\Administrators and

How can I do a BEFORE UPDATED trigger with sql server?

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I'm using Sqlserver express and I can't do before updated trigger. There's a other way to do that? achinda99 MSSQL does not support BEFORE triggers. The closest you have is INSTEAD OF triggers but their behavior is different to that of BEFORE triggers in MySQL. You can learn more about them here , and note that INSTEAD OF triggers "Specifies that the trigger is executed instead of the triggering SQL statement, thus overriding the actions of the triggering statements." Thus, actions on the update may not take place if the trigger is not properly written/handled. Cascading actions are also

Default instance name of SQL Server Express

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问题 I don't have access to a SQL Server Express installation at the moment, but I know that the installer usually installs SQL Server Express with an instance name. What is the default instance name for SQL Server Express installations? I.e., how do you access such an installation by default? Is it localhost\SQLEXPRESS$ ? Is the same name used for both 2005 and 2008 servers? 回答1: When installing SQL Express, you'll usually get a named instance called SQLExpress, which as others have said you can

confusion about SQL Server Express and localdb

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问题 I need to deploy a WCF service with a database on client machines. I am confused about SQL Server Express. I need to verify all of the following. When attaching database files in the App_Data folder, do I still need to install SQL Server Express engine (Windows service) on client machines? There is a flavor called SQL Server Express LocalDb . That one does not need an engine (Windows service)? But I think it need a prerequisite installation of LocalDb. Localdb is introduced with SQL Server

SQL Server Express vs express localdb

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问题 I am having quite a few problems understanding differences between regular SQL Server Express and express Localdb. Before you go ahead and tag a previous post about this question, I've went through question history quite a few times. The resources that I found somewhat helpful were: Is there a difference between SQL Server Express (2012) and LocalDB? and an official Microsoft page article about it. I believe I do understand that Express Localdb is an edition of SQL Server Express, that is

SQL Server after update trigger

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问题 I have a problem with this trigger. I would like it to update the requested information only to the row in question (the one I just updated) and not the entire table. CREATE TRIGGER [dbo].[after_update] ON [dbo].[MYTABLE] AFTER UPDATE AS BEGIN UPDATE MYTABLE SET mytable.CHANGED_ON = GETDATE(), CHANGED_BY=USER_NAME(USER_ID()) How do I tell the trigger that this applies only to the row in question? 回答1: Here is my example after a test CREATE TRIGGER [dbo].UpdateTasadoresName ON [dbo].Tasadores

How can I create a user in SQL Server Express database I added to my project?

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问题 How can I create a SQL user in a SQL Server Express database that I added to my project? I need to create a user to use in a connection string that doesn't use Integrated Security. 回答1: You would need to create a SQL Authenticated login first with CREATE LOGIN then add a user associated with that login to your database by using CREATE USER. USE [master] GO CREATE LOGIN [JohnEgbert] WITH PASSWORD=N'YourPassword', DEFAULT_DATABASE=[YourDB], CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF GO USE [YourDB]

SQL LocalDB vs SQL Server CE

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问题 I have a small project that will have 1 user on 1 computer. The database will be rather small (probably less than 1 mb of data). I plan to use WPF and Entity Framework for that project. I came up with 2 potential database solutions for my project : SQL Server CE and SQL Server Express LocalDB (with SQL Server 2012). I have never worked with any of those, I'm more used to work with the full SQL Server 2008 installation. I also want it to be easy to install on the client. Ideally I'd like to

Enable tcp\\ip remote connections to sql server express already installed database with code or script(query)

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I am deploying sql express with my application. I will like that database engine to accept remote connections. I know how to configure that manual by launching the sql server configuration manager, enabling tcp/ip connections, specifying the ports etc.. I am wondering if it will be possible to do the same thing from the command line. Or maybe I will have to create a "SQL Server 2008 Server Project" in visual studio. EDIT 1 I posted the same question in here but I will like to do the same thing on a instance of sql express that is already installed. Take a look at the question in here EDIT 2 I

copy a database within SQL Server Express?

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问题 I would like to make a copy of a database I have but keep it on the same server as a test database. However, everything I have found is to use the copy database wizard (I am using MS SQL Server Express). The instructions always say: In SQL Server Management Studio, in Object Explorer, expand Databases, right-click a database, point to Tasks, and then click Copy Database. I don't have the Copy Database option. I am running as an admin, so no clue why it is missing for me - is it something I