Calculating Elapsed Times (SQL Spackle)
Calculating elapsed time between time values can be an interesting problem that is easily solved even when data anomalies are present.
2019-04-05 (first published: 2013-09-26)
12,574 reads
Dwain Camps
Performance of the SQL MERGE vs. INSERT/UPDATE
The SQL MERGE statement offers convenience, safety and elegance, but how does it perform compared to other methods?
2017-02-03 (first published: 2013-10-28)
83,159 reads
Improving Performance for Some LIKE “%string%” Searches (SQL Spackle)
If you've ever wondered if you can do better than an INDEX SCAN when you do a LIKE "%string%" search, read on...
2016-02-12 (first published: 2014-04-07)
42,117 reads
Logging and Error Handling for SQL Stored Procedures
Learn how to develop and test a template for logging and error handling in a multi-step SQL stored procedure
2015-09-18 (first published: 2014-01-20)
23,784 reads
The Fastest Way to Combine DATE and TIME Data Types to a DATETIME
Recently while working with a table where there were two columns, one a DATE datatype and a second TIME datatype,...
2015-09-08 (first published: 2015-08-28)
47,101 reads
High Performance T-SQL using Code Patterns
What exactly does this mean? We’ve heard of “code patterns” in other programming languages, but what does it mean to...
2015-06-04 (first published: 2015-05-27)
8,780 reads
The Best Tool for Comparing Whether Two T-SQL Queries Produce Identical Results
There is one software tool that should be in every software developer’s tool chest. That is knowledge of the platform...
2015-05-26 (first published: 2015-05-21)
7,566 reads
Excel in T-SQL Part 2 – The Normal Distribution (NORM.DIST) Density Functions
Today’s blog will be the second in a multi-part series on replicating Excel functions in T-SQL, continuing with Excel’s NORM.DIST...
2015-05-14
9,826 reads
The Case for Scalar-valued, User-defined Functions in T-SQL
Did you know that scalar-valued, user-defined functions can be used in DEFAULT/CHECK CONSTRAINTs and computed columns? Learn about it...
2015-05-12
6,661 reads
Ruminations on Writing Great T-SQL
Today we’re going to try to extend some advice that I once heard from SQL MVP Jeff Moden, which I...
2015-05-04 (first published: 2015-04-23)
9,207 reads
Blogs
It’s 2021, so why are you reading this?
If you’re reading this, there’s a good chance you’re straight, white, male, and English-speaking....
Daily Coping 20 Jan 2021
By Steve Jones
I started to add a daily coping tip to the SQLServerCentral newsletter and to...
[Coping] Hidden Wounds
By Brian Kelley
Through high school and college, I carried deep wounds due to what was going...
Forums
Execute As not reading system view
I have a stored procedure with the following: SELECT physical_name FROM sys.master_files Where physical_name...
Find unmatched between 2 tables using field as selection criteria
I have the following tables as a example. Table 1 EmpID, LastName, FirstName 1,Smith,John...
update using self-join - confirm it looks at old values
I'm doing an update using a self-join, and just want to confirm something. If...
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