How to get the list of all database users

Question

I am going to get the list of all users, including Windows users and \'sa\', who have access to a particular database in MS SQL Server. Basically, I would like the list to look

Answer 1

SELECT name FROM sys.database_principals WHERE
type_desc = 'SQL_USER' AND default_schema_name = 'dbo'

This selects all the users in the SQL server that the administrator created!