The OUTPUT clause is often times underappreciated by the TSQL programmer. There are many really interesting things that you can do with the OUTPUT clause, from inserting to two tables with one statement or to replace the SCOPE_IDENTITY option. For this posting I am looking into using the OUTPUT clause for auditing. By auditing in this example, I specifically mean …
After the last post on Cumulative Distribution Function (CDF) or as it is known in TSQL CUME_DIST(), I realized that although I showed how to use it, I didn’t really explain what it means, or when to use it. That is where this example comes in. First lets take an example that generates simulated dice rolls. What are the odds …
Cumulative Distribution Function (CDF) – Analyzing the Roll of Dice with TSQL Read more »
Percent rank is defined as the number of values that are the same or less than the current value divided by one less than the number of values. Percent rank is different than PERCENTILE, stay tuned for PERCENTILE_DISC and PERCENTILE_CONT which are different from PERCENT_RANK. For this example I will be using the same revenue table in the sample database …
I came across this example when preparing my CTE presentation a while back. Which produces the following output. Download my book for FREE when you sign up for my mailing list. Receive your free copy today!
Here listed is the current percentages of SQL server versions running our Daily Check-up with Database Health Monitor. Compare this month’s percentages to Last Month’s Percentages
A couple years ago in my Incident Safety Officer class with the fire department we studied risk assessment for any incident that the fire department may respond to. Since that time I have used a similar risk assessment matrix for SQL Server upgrades, and other big SQL Server maintenance tasks. The risk assessment matrix as it is used by the …
One thing that I end up having to look search on regularly is rounding of dates and times in Transact SQL, having looked this up too many times I finally realized that it is time for me to do my own blog post for it. First off, whats the difference between rounding and truncating in these examples. Rounding rounds to …
TSQL Rounding or Truncating Date Time to Nearest Day, Hour, Minute or Second Read more »
The question came up as to how do I parse a query string using TSQL. So here you go, using a common table expression, and basing this on a similar function to what I put together yesterday for split. which produces this output. A quick and easy way to parse a query string in TSQL using a CTE. Receive a …
Using a CTE in a Function to Split Up a Query String Read more »
Part of SQL Server running queries is that once a query is analyzed, parsed and compiled, that compiled plan is kept in memory so that it can be quickly re-used in the future. If you are using proper parameterized queries, most of your queries will get kept around and re-used saving lots of CPU and memory on SQL Server. If …
SSRS Editor Tip of the Day… CTRL + Arrows Wed, 28 Jul 2021 I learned this from one of my co-workers. A quick tip for formatting SSRS reports. When you are in the SSRS report editor, and you want to move the currently selected object (or objects), you can move them with …. Read more… TSQL Basics Part 19: TWO …