How to remove a user from SQL Server 2014? - sql

If I open SQL Server 2014 Management Studio GUI and connect to my database, I can expand the database > Security > Logins to see the list of users that can login.
I'm trying to find out the SQL statement that I can use to remove one of those users (I need an automated solution).
I've tried
drop login 'BUILTIN\Users'
delete from master..syslogins where loginname = 'BUILTIN\Users'
drop user 'BUILTIN\Users'
from the drop commands, I get the error
Incorrect syntax near 'BUILTIN\Users'
and the delete throws
Ad hoc updates to system catalogs are not allowed

Don't use the quotes but brackets instead.
DROP LOGIN [BUILTIN\Users]

Related

How to create a contained database and user in azure sql

I am trying to create a contained user for just one database in Azure SQL Server,
I have tried using the sp_configure keyword, it says it is not available in the version of the SQL Server I am using.
Also, I used the Alter database statement, I got the error below:
ALTER DATABASE statement failed; this functionality is not available
in the current edition of SQL Server.
Please, how can I solve this problem???
You do not need to run the ALTER DATABASE ... SET CONTAINMENT command on Azure SQL DBs to accept contained users - it is already enabled by default. You simply need to create the user with just a login and password. A simple example of a contained user with password:
CREATE USER yourUser WITH PASSWORD = 'yourPassword';
See the official documentation for more examples:
https://learn.microsoft.com/en-us/sql/t-sql/statements/create-user-transact-sql?view=sql-server-ver15#e-creating-a-contained-database-user-with-password
https://learn.microsoft.com/en-us/sql/t-sql/statements/create-user-transact-sql?view=sql-server-ver15#f-creating-a-contained-database-user-for-a-domain-login
sp_configure is not supported in Azure SQL database, even use the Alter database:
In Azure SQL database, login is used to login the Azure SQL server, user is to connect to the database. User is database level, and login is server level.
Create login in master DB(( Login must be created in master DB)):
CREATE LOGIN AbolrousHazem
WITH PASSWORD = '340$Uuxwp7Mcxo7Khy';
Then we can create user in user DB( create the database contained user in user DB):
CREATE USER AbolrousHazem FOR LOGIN AbolrousHazem;
GO
For more details, please ref: https://learn.microsoft.com/en-us/azure/azure-sql/database/logins-create-manage

SQL Server User Mapping Error 15023

I try to map my other DB to a user by going to Security > Logins > right click someuser > Properties > User Mapping > Select DB > set as db_owner and then ok, but I keep on getting an error saying
User, group, or role 'someuser' already exists in the current database. (Microsoft SQL Server, Error: 15023)
What is causing the error, and how do I map that user to the database?
To fix the user and login mapping you need to open a query window in the SQL Server Management Studio. Enter the following two lines and replace myDB with the database name and myUser with the correct user name:
USE myDB
EXEC sp_change_users_login 'Auto_Fix', 'myUser'
If run successfully you should get an output like this one:
The row for user '****' will be fixed by updating its login link to a login already in existence.
The number of orphaned users fixed by updating users was 1.
The number of orphaned users fixed by adding new logins and then updating users was 0.**
Your user should now be mapped correctly.
Edit:
New way to Resolve/Fix an Orphaned User:
In the master database, use the CREATE LOGIN statement with the SID option to recreate a missing login, providing the SID of the database user.
CREATE LOGIN <login_name>
WITH PASSWORD = '<use_a_strong_password_here>',
SID = <SID>;
To map an orphaned user to a login which already exists in master, execute the ALTER USER statement in the user database, specifying the login name.
ALTER USER <user_name> WITH Login = <login_name>;
When you recreate a missing login, the user can access the database using the password provided. Then the user can alter the password of the login account by using the ALTER LOGIN statement.
ALTER LOGIN <login_name> WITH PASSWORD = '<enterStrongPasswordHere>';
if it is just one or two users, then easiest way is to drop the database user from the restored database, remap the database user to the server login using SSMS. If the server login does not exist then just create it, map the user.
Option 2: If you are migrating a large number of users, use sp_help_revlogin. sp_help_revlogin is a Microsoft supplied stored procedure that will help migrate logins from one server to another, including passwords and SIDs. Here is a good article about it SP_HELP_REVLOGIN : http://www.databasejournal.com/features/mssql/article.php/2228611/Migrating-Logins-from-One-SQL-Server-to-Another.htm
Code patches to help use it :
run following T-SQL Query in Query Analyzer. This will return all the existing users in database in result pan.
USE YourDB
GO
EXEC sp_change_users_login 'Report'
GO
Run following T-SQL Query in Query Analyzer to associate login with the username. ‘Auto_Fix’ attribute will create the user in SQL Server instance if it does not exist. In following example ‘ColdFusion’ is UserName, ‘cf’ is Password. Auto-Fix links a user entry in the sysusers table in the current database to a login of the same name in sysxlogins.
USE YourDB
GO
EXEC sp_change_users_login 'Auto_Fix', 'ColdFusion', NULL, 'cf'
GO
Run following T-SQL Query in Query Analyzer to associate login with the username. ‘Update_One’ links the specified user in the current database to login. login must already exist. user and login must be specified. password must be NULL or not specified
USE YourDB
GO
EXEC sp_change_users_login 'update_one', 'ColdFusion', 'ColdFusion'
GO
2) If login account has permission to drop other users, run following T-SQL in Query Analyzer. This will drop the user.
USE YourDB
GO
EXEC sp_dropuser 'ColdFusion'
GO
Create the same user again in the database without any error.
If you assign permissions to a database user without mapping it to the database first, it throws the error you mentioned.
You should be able to delete the user, map it to the database and then assign the user to the db_owner role.
First drop your user, then execute the script below:
USE [YOURDB]
GO
CREATE USER [USERNAME] FOR LOGIN [USERNAME]
GO
USE [YOURDB]
GO
ALTER USER [USERNAME] WITH DEFAULT_SCHEMA=[dbo]
GO
I had the problem when I was trying to copy a production database to a local test database. In SSMS, I made sure to disconnect from the production server before executing scripts on the local. However, even though I thought I had disconnected, someone pointed out that the title of the production database was still there, and I got errors that objects were already there. The solution was to totally exit from SSMS and start it again, only connecting to the local test database that time.
you can solve problem by expand database ->Security -> Users
and delete the user 'someuser' ,after that go to user mapping and assign.
this problem happen some times because the database user 'someuser' was deleted from 'Logins' in Security section in SSMS and the database still own this user
Create failed for User (Microsoft.SqlServer.Smo)
SQL Server Error User, group, or role already exists in the current database. (Microsoft SQL Server, Error: 15023)
To fix above error delete user under each database individually

How to join a database user to the db_owner role using a T-SQL script?

I use SQL SERVER 2008 R2 Express.
I'm on a NEW project with a database named myDatabase with the db owner username myUsernamae.
I would like to use ALTER ROLE instead of sp_addrolemember due to this message from Microsoft regarding sp_addrolemember (Transact-SQL):
Important This feature will be removed in a future version of
Microsoft SQL Server. Avoid using this feature in new development
work, and plan to modify applications that currently use this feature.
Use ALTER ROLE instead.
I tried
USE [myDatabase]
GO
ALTER ROLE [db_owner] ADD MEMBER [myUsername]
GO
but I keep getting this error message:
Incorrect syntax near the keyword 'ADD'.
What is the correct syntax?
ALTER ROLE is new to SQL Server 2012, while you are using SQL Server 2008 R2.
I wouldn't worry to much about sp_addrolemember. Scripts generated by 2008R2 Management Studio use this procedure, so it should be a while before they really phase it out.

Add a group in SQL 2008 RC

I have a group called kwr-fs-dws-sqladm (Active Directory/Exchange) and there are two users in this group.
This group will go to all sql server and instances. I have access to windows server 2008 as admin.
How can I add that group in all 60 SQL Servers and 200 Instances?
i.e. kwr-fs-dws-sqladm - user as sysadmin -.
Use [Master]
CREATE LOGIN [DOMAIN\kwr-fs-fws-sqladm] FROM WINDOWS;
EXEC sp_addsrvrolemember 'DOMAIN\kwr-fs-fws-sqladm', 'sysadmin';
Execute on each server, you will want to check out the CREATE LOGIN syntax for extra options.
I've never managed that many SQL servers, i'd assume there is a way of executing on all. One way is to add each server to a server group in SSMS, then you can right click that group and create a new query which will execute on each server.

Drop User from SQL Server Database?

How can I drop user from a database without dropping it's logging?
The script should check if the user exists in database, if does then drop the user.
Is this what you are trying to do??
IF EXISTS (SELECT * FROM sys.database_principals WHERE name = N'username')
DROP USER [username]
If you are using SQL Server Management Studio you can browse to the user and right-click selecting delete.
The accepted answer is working good enough. Additionally that is good to know SQL Server added IF EXIST to some DROP commands from version 2016 (13.x) including 'DROP USER' command.
IF EXISTS
Applies to: SQL Server ( SQL Server 2016 (13.x) through current version, SQL Database).
Conditionally drops the user only if it already exists.
So you could just delete user as below:
-- Syntax for SQL Server and Azure SQL Database
DROP USER IF EXISTS user_name
See the full description in this link: DROP USER (Transact-SQL)
Hope this help.