2024-10-14
529 reads
String Function
A Beginner’s Guide to SQL String Functions
Get an introduction to many of the many ways you can manipulate and interact with strings using SQL. Read on for more!
2019-12-18
DigitsOnlyEE and AlphaNumericOnly
A nasty fast way to remove non-numeric and non-alphanumeric characters from a string
2019-03-15 (first published: 2016-05-17)
3,194 reads
Translate function for SQL Server
Relational database management systems such as Oracle, Postgres, DB2 and Teradata, as well as other programming languages such as Python, Hive, XSLT and SAS have a Translate function. Now we have one for SQL Server.
2016-06-01 (first published: 2016-05-12)
1,057 reads
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Query Plan Regressions --
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Question of the Day
Query Plan Regressions --
For the Question of the day, I am going to go deep, but try to be more clear, as I feel like I didn't give enough info last time, leading folks to guess the wrong answer... :) For today's question: You’re troubleshooting a performance issue on a critical stored procedure. You notice that a previously efficient query now performs a full table scan instead of an index seek. Upon investigating, you find that an NVARCHAR parameter is being compared to a VARCHAR column in the WHERE clause. What is the most likely cause of the query plan regression?
See possible answers