Question: Which is Optimal – TOP 0 OR WHERE 1 = 2?
Answer: They both are the same!
SQL SERVER – SSMS – Enable Line Numbers in SQL Server Management Studio
During the Comprehensive Database Performance Health Check, I never take access to the server. We always connect via GoToMeeting or WebEx. Due to the security issue, I always prefer that I never log in to the server directly but I always like to teach and guide DBAs who are working with me on another side, how to do SQL Server Performance Tuning. However, while I do this, I face often challenge when I am looking at the screen and tell DBA on the other side to change any specific part of the query. This is when I believe the trick of enabling line numbers in SSMS comes in handy.
Practical Real World Performance Tuning – Reviews and Feedback
I have so far received an amazing response to my online class Practical Real World Performance Tuning. As I am writing this blog post so far we have 37 reviews for this class. In today’s blog post we will go over a few of the reviews and feedback.
SQL SERVER – Automated SQL Server Consolidation and Right Sizing – Save 50% Data Platform Costs
If you have ever needed to implement a large-scale data platform migration or consolidation project, you are definitely familiar with many of the pain points faced during the process. Firstly, manual data collection is very tricky to arrange and demands lots of work. Secondly, the planning of the capacity is a complex and detailed process – you need to take all the performance counters, their threshold levels and SLA’s, trends, different server benchmarks and such into account. When it comes to the consolidation effort, it is impossible to try to rearrange the SQL Server instances into a most optimal target server setup with manual work. All this takes a lot of time and is prone to human error.
SQL SERVER – Generating In-Memory OLTP Migration CheckList
During recent Comprehensive Database Performance Health Check, one of my customer asked if I can also help them to check their readiness of In-Memory OLTP Migration as well as the help them build a checklist which can help them with In-Memory OLTP Migration.
Alphabets – SQL SERVER – Retrieving Rows With All Alphabets From Alphanumeric Data
I got an email from one of my blog readers asking for an easy way to identify if a given string contains only alphabets. There can be methods.
SQL SERVER – Applying NOLOCK to Every Single Table in Select Statement – SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
The other day, during SQL Server Performance Tuning Practical Workshop, I walked into a very interesting situation. While tuning a query we had a situation when we had to check if the query is locked during the execution of not. To test our theory out we had to put a nolock hint for every single table of the long query. However, it was no way possible to do so as the Stored Procedure was super huge and involved over 90 tables and 14 views in multiple SQL Statements. It was indeed a huge challenge for a developer team to modify that SP. If you ever face such situations, you should not stress out. There is a much simpler way to read uncommitted data.