Question I received in Email : How to list all the columns in the database which are used as identity key in my database?
SQL SERVER – Introduction to sys.dm_exec_query_optimizer_info
Many times when I am just bored I surf Book On Line for SQL Server 2005. Almost all the time I find something new which makes me believe that I have lot to learn and there are so many things I am not aware of. Today I found system catalog view sys.dm_exec_query_optimizer_info. I just enjoyed reading about it and now I will share this with you.
SQL SERVER – 2005 – Find Index Fragmentation Details – Slow Index Performance
Just a day ago, while using one index I was not able to get the desired performance from the table where it was applied. I just looked for its fragmentation and found it was heavily fragmented. After I reorganized index it worked perfectly fine. Here is the quick script I…
Read MoreSQLAuthority News – Few Links About SQLAuthority
I have listed few important links of SQLAuthority.com, I still receive some repeated questions. I do my best to respond to all of my readers, however, most of the time I am sending them link to one of my previously written article. Many times most of the answers can be…
Read MoreSQL SERVER – Simple Puzzle Using Union and Union All – Answer
Yesterday I posted a puzzle SQL SERVER – Simple Puzzle Using Union and Union All, today we will see the answer of this. Following image explains the answer of puzzle. You can read the explanation of why this is answer read my previous article SQL SERVER – Union vs. Union…
Read MoreSQL SERVER – Simple Puzzle Using Union and Union All
I often get request to write puzzles using SQL Server. Today, I am presenting one very simple but very interesting puzzle. What will be the output of following two SQL Scripts. First try to answer without running this two script in Query Editor. Script 1 SELECT 1 UNION ALL (SELECT…
Read MoreSQL SERVER – 2005 – Mechanisms to Ensure Integrity and Consistency of Databases – Locking and Row Versioning
Today I was going through Book On Line while researching something, I come across one interesting small article about two mechanisms to ensure integrity and consistency of databases – 1) Locking 2) Row Versioning Let us see their definition from Book Online Itself. Locking Each transaction requests locks of different…
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