Issues Determining an Individual SQL Server User's Permissions

Recently I was supporting a third party application. It queries to determine what tables it has permissions to before it proceeds with the rest of its functionality. We had implemented permissions based on the best practice of creating roles, assigning the permissions to the roles, and then making the users members of the roles. The application was querying INFORMATION_SCHEMA.TABLE_PRIVILEGES and of course didn't find any permissions directly against the user in question. We ended up granting explicit permissions to the user so the application would work, but I'm more interested in the general case. How can I determine permissions for an individual user?

Master Keys

The User Defined Server Roles in SQL Server 2012

This article describes how to create user defined server roles and use stored procedures and queries related.

Grant Execute to all SQL Server Stored Procedures

With SQL Server 2000 no default server, database or application role was available to be able to execute all stored procedures. With SQL Server 2005, SQL Server 2008 and SQL Server 2008 R2 has this changed with all of the new security features? If not, what options do I have to grant execute rights to the needed database roles?

SQL Server Agent Roles

CREATE ROLE

New User-defined Server Roles in SQL Server 2012

SQL Server 2012 brings new security enhancements, one of which is to create user defined server roles, which simplifies instance wide administration and helps to increase the security of the instance by letting you define different groups with different sets of permissions as per their role and responsibilities.

Disaster Recovery: How to regain your lost sysadmin access

This article shows you the process which you require to regain your sysadmin access.

Query accounts, domain groups, and members who have admin membership.

This script leverages master.sys.server_principals and xp_logininfo to return accounts, domain groups, and members in a SQL Server admin fixed role.

SQL Agent Roles