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External Article

Using OVER() with Aggregate Functions

One of new features in SQL 2005 that I haven't seen much talk about is that you can now add aggregate functions to any SELECT (even without a GROUP BY clause) by specifying an OVER() partition for each function. Unfortunately, it isn't especially powerful, and you can't do running totals with it, but it does help you make your code a little shorter and in many cases it might be just what you need.

2007-06-20

3,806 reads

Technical Article

Use of regular expressions in TSQL

This script creates 2 new system functions :fn__testregexp(@String,@Pattern) returns int    execute the method test(@String) on the regular expressions @Pattern    returns :        0 : no match        1 : match        null : one of the parameters was null        anything else : error from sp_OA procedure        fn__replaceregexp(String,@Pattern,@Replace) returns varchar    execute the method Replace(@String,@Replace) […]

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2007-06-14 (first published: )

1,922 reads

Technical Article

SP_WHO_3 Powerful Filtering/Sorting Very Efficient

Hello,I posted this a while ago to several web sites. Someone found an obscure bug in it and I fixed it (newest script attached below). When I posted it to you last time, it didn't show up in any of the categories that I had checked; hmmmm? However, when I searched google, you have it […]

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2007-06-13 (first published: )

1,846 reads

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Question of the Day

The Max PK Length

If I create a multiple column Primary Key constraint, what is the most number of bytes I can include in the constraint?

See possible answers