Recently, one of my clients showed me a very cool trick to check Primary Key for a single table with the help of the system stored procedure sp_pkeys.
What is Trusted Constraint in SQL Server? – Interview Question of the Week #210
Question: What is Trusted Constraint in SQL Server?
How to Create Primary Key Without ANY Index? – Interview Question of the Week #143
Question: How to Create Primary Key Without ANY Index?
SQL SERVER – How to Find UNIQUE Key Columns? – sp_special_columns
Unique key on a column is used to identify a particular row easily. It is created either by explicitly mentioning it either part of the definition or when defined as Primary key (By default it is unique and not null). Let us learn about special stored procedure sp_special_columns customers today.
How to Allow Only Alphabets in Column? – Interview Question of the Week #136
Question: How to Allow Only Alphabets in Column?
Answer: This was a real world scenario and I have mixed feeling about this kind of question being asked in interviews. However, let us accept this question as it is and let us see how to solve this problem.
SQL SERVER – FIX: Rule “Reporting Services Catalog Database File Existence” Failed
Disasters are always bad. Recovering from disaster is a skill and needs a lot of planning and practice. One of my clients had a disaster and built a new machine to restore the backups. They tried a few attempts to install SQL Server but were having issues. Finally, they contacted me for consultation to fix rule reporting services catalog database file existence.
How Many Foreign Key Can You Have on A Single Table? – Interview Question of the Week #096
Question: How Many Foreign Key Can You Have on A Single Table?
I was asked above question in my recent SQLPASS presentations. I quickly answered that it is 253. However, after I returned home when I searched a bit more, I realized that my answer is not complete, hence this blog post.