Have you ever wondered how to do program or perform simple statistical function within SQL Server? Well the kind people at Microsoft have enabled us to all to save time by giving us a few inbuilt functions which save us from having to solve them programmatically. I have used the unit Price column in the SalesOrderDetailContinue reading “Statistical Aggregate functions in SQL Server — Parv The IT Geek”
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SQL Cursor to Kill all connections to a database — Parv The IT Geek
Have you ever tried to restore over a database but found that all attempts are being blocked by an annoying SPID? Or had hundreds of orphaned SPIDs running crazy on your instance? Well I have the solution for you with the below script which uses a cursor to kill all connections to a database. DECLAREContinue reading “SQL Cursor to Kill all connections to a database — Parv The IT Geek”
SQL Cursors — Parv The IT Geek
Cursors are a way of manipulating data and interacting with them one at a time. They have a bad reputation within the SQL world as they go against the SET based logic and they can have a very high performance cost. Where possible you should ask yourself whether you could avoid using a Cursor. ThisContinue reading “SQL Cursors — Parv The IT Geek”
WHILE, BREAK, and CONTINUE Statements — Parv The IT Geek
Have you ever wondered how to create a loop in SQL? Or wondered how to break and escape a loop? Well I am going to briefly introduce you to the WHILE, BREAK, and CONTINUE Statements which will satisfy your curiosity The first command I will introduce you to is WHILE DECLARE @i int = 1;Continue reading “WHILE, BREAK, and CONTINUE Statements — Parv The IT Geek”
Learn about the WAITFOR TIME & WAITFOR DELAY — Parv The IT Geek
Have you ever wanted to pause a command for a short period or wanted to run a transaction at a specific time. Well I am going to quickly show you how to do them both using the WAITFOR command. SELECT GETDATE() WAITFOR DELAY ’00:00:10′; BEGIN SELECT GETDATE() END; The above code shows you how toContinue reading “Learn about the WAITFOR TIME & WAITFOR DELAY — Parv The IT Geek”
Declaring Variables and Retrieving Variables — Parv The IT Geek
A variable can be best described as being a place holder for information which you then fill in with relevant information which you will want to retrieve later. The below query shows the result from the CURRENT_TIMESTAMP which returns the current date and time. PRINT CURRENT_TIMESTAMP Jan 15 2015 11:44AM The CURRENT_TIMESTAMP result can beContinue reading “Declaring Variables and Retrieving Variables — Parv The IT Geek”
TSQL Challenge on BeyondRelational.COM — Parv The IT Geek
I was asked by one of my junior colleagues to help him with a puzzle he had seen on BeyondRelational.COM which I thought would be a nice challenge. I liked the premise of the scenario and I always liked a challenge decided to show my colleague how I would approach and resolve this problem. IContinue reading “TSQL Challenge on BeyondRelational.COM — Parv The IT Geek”
IF ELSE Control of flow statements — Parv The IT Geek
The IF ELSE statements are one of the most frequently used statement within SQL and control of flow statements are one of the core statements within any programing language. Once you have understood the concept you can easily make powerful scripts. An IF statement is a check to see whether a condition is TRUE andContinue reading “IF ELSE Control of flow statements — Parv The IT Geek”
How to attach AdventureWorks 2012 to SQL Server — Parv The IT Geek
Have you ever wanted to install the sample database (AdventureWorks )provided by Microsoft which a lot of the tutorials and books refer to? Well one of my colleagues has started to learn SQL Server so I thought I would knock up a quick guide for him. The correct classical way is to use T-SQL wouldContinue reading “How to attach AdventureWorks 2012 to SQL Server — Parv The IT Geek”
ABC The best trait of a SQL DBA — Parv The IT Geek
Have you ever wondered what the best trait all super SQL DBAs possess? Well I will tell what the best trait is and an easy acronym to remember it. I had a conversation with one of my colleagues we talked about the different DBAs and System Admins in the company both past and present andContinue reading “ABC The best trait of a SQL DBA — Parv The IT Geek”
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