Creating a user, mapping to a database and assigning roles to that database using SQL scripts

Question

I\'ve done this before but not through scripts. I\'ve to create a new user in SQL server (SQL Authentication) and map the user to a database and assign the roles for the use

Answer 1

The above solution works for me. However if the Username doesnt yet exist in that database as a USER, that username will not be fully mapped to the database role.

In this situation I first add the user:

USE databasename

CREATE USER [DOMAIN\svce_name] FOR LOGIN [DOMAIN\svce_name] WITH DEFAULT_SCHEMA=[dbo]
GO

Then I add the role:

USE databasename
EXEC sp_addrolemember N'db_ssisoperator', N'DOMAIN\svce_name'
GO