In SQL Server, managing user access and permissions is crucial for maintaining the security and integrity of a database. Often, there is a need to retrieve a list of user names while excluding certain system roles. In this blog post, we will discuss a script that allows you to accomplish this task efficiently.
The script we’ll explore helps you select user names from the sys.sysusers table in SQL Server. It applies filters to exclude specific system roles such as ‘dbo’, ‘guest’, ‘INFORMATION_SCHEMA’, and ‘sys’. By executing this script, you can obtain a list of relevant user names, which can be further utilized for various administrative and analytical purposes.
SELECT name FROM sys.sysusers WHERE issqlrole = 0 AND name NOT IN ('dbo', 'guest', 'INFORMATION_SCHEMA', 'sys')
Let’s break down the script to understand its functionality:
SELECTstatement is used to retrieve data from the sys.sysusers table.
FROMclause specifies the table from which we want to retrieve data, which is sys.sysusers in this case. This table stores information about user accounts in the SQL Server instance.
WHEREclause applies filters to narrow down the results. The condition
issqlrole = 0ensures that only non-system roles are considered. The
issqlrolecolumn indicates whether a user is a system role or not, with a value of 0 denoting a non-system role.
ANDoperator combines multiple conditions in the WHERE clause.
NOT INoperator excludes specific system roles from the result set. The list of excluded roles is provided within the parentheses and separated by commas.