The best way to learn something is to revisit some of the older blogs and then look at finding a more efficient way to work on the same problem. Recently I was looking at the forums to find a question come up again and again around making a comma separated list. This is not new over this blog and if you search you will get few. Long time ago I have written below blogs to show the values stored in table as comma separate list – this is not a rehash of what was written before but a newer way to solve the problem again.
How many times you had a problem where you have deployed a high availability solution, but the application is not able to use database and getting login failed for user after failover? Note that this issue would happen only with SQL Logins not Windows Login. You would understand the reason shortly. Here are the situations where you might face login failure.