sqlexpert

Interested in Haskell, Idris, Agda, F#, Scala, Clojure

Technical Article

LongestRunningQueries.vbs

This SQL 2005-only VBS script will show the longest-running queries on a given server, complete with graphical .sqlplan when clicked. Results go to a web page, viewed from the local machines's temp directory.Each row of the resulting table has the session ID, the currently running statement of the batch, a link to a text file […]

5 (1)

You rated this post out of 5. Change rating

2007-07-24 (first published: )

368 reads

Technical Article

faster dbo.ufn_vbintohexstr - varbinary to hex

Here's an alternative to Clinton Herring's ufn_vbintohexstr which should be much faster with large varbinary values. First, in his original version, the inner-loop CASE statements can be replaced with this: select @value = @value + CHAR(@vbin/16+48+(@vbin+96)/256*7) +CHAR(@vbin&15+48+((@vbin&15)+6)/16*7) How does it work? By adding 6 to a hex-digit in (@vbin&15), you have a value from 16 […]

You rated this post out of 5. Change rating

2006-12-20 (first published: )

107 reads

Technical Article

BASE64 Encode and Decode in T-SQL - optimized

This is just an optimized version of Daniel Payne's two scripts, base64_encode and base64_decode, with changes to end-of-block handling and a bug fix or two. If the encoded string ends in =, the last character is truncated. If ending in ==, two characters are chopped off. That seems better than replacing NUL characters with spaces, […]

4.8 (5)

You rated this post out of 5. Change rating

2006-12-18 (first published: )

7,578 reads

Technical Article

HexToInt

Challenged by Hans Lindgren's stored procedures of the same name, I created this. Note that it produces strange results on non-hexadecimal strings, overflows at 0x80000000, and could have issues with byte-ordering on some architectures.How does it work? Well, the distance between one after '9' (':') and 'A' is 7 in ASCII. Also, if I subtract […]

You rated this post out of 5. Change rating

2006-12-15 (first published: )

192 reads

Technical Article

HexToSmallInt

Hans asked if it could be faster. This is about 10% faster; not much. His is admittedly more readable, and mine will act very strangely with invalid hex digits.How does it work? I'm converting the string '1234' to the value 0x31323334 (for example), then subtracting '0000' so that it is 0-based in each byte (CONVERT(INT,0x30303030) […]

You rated this post out of 5. Change rating

2005-05-16 (first published: )

133 reads

Blogs

Monday Monitor Tips: Searching Permission Changes

By

During a demo of Redgate Monitor Enterprise to a customer, they asked about how...

Generative AI vs Predictive AI | Real-World Examples & Tools You Should Know

By

What is Artificial Intelligence? Understanding Predictive vs. Generative AI Artificial Intelligence (AI) is transforming...

SQL Bits 2025 Wrap

By

SQL Bits 2025 was amazing, as always. It’s been my favorite conference to attend,...

Read the latest Blogs

Forums

Best Compliance Training for Professionals to Stay Ahead of Regulations

By jerrypaul010

Finding the best compliance training is essential for professionals who need to stay current...

SQL Server 2008 to SQL Server 2022

By Skybvi

Hi, Is it possible to upgrade from sql server 2008 to sql server 2022,...

The Hidden Cost of MAXDOP: CPU Spikes, Query Slowdowns, and What We Learned

By Chandan Shukla

Comments posted to this topic are about the item The Hidden Cost of MAXDOP:...

Visit the forum

Question of the Day

Using Heaps

When does Microsoft recommend using a heap as a table structure (no clustered index)?

See possible answers