The ROW_NUMBER function has drastically changed the way we can write a number of queries in T-SQL. New author Francis Rodrigues brings us a few places where this function can improve the efficiency of your code.
2010-01-29 (first published: 2009-05-12)
72,830 reads
2009-05-11
4,536 reads
2009-05-07
4,157 reads
2009-05-06
3,971 reads
SQL Server database engine doesn't have a MEDIAN() aggregate function. This is probably because there are several types of median, such as statistical, financial or vector medians. Calculating Medians are essentially a row-positioning task, since medians are the middle value of an ordered result. Easy to do in SQL? Nope. Joe Celko explains why.
2009-05-06
2,024 reads
2009-05-05
4,801 reads
2009-05-04
4,509 reads
Reports all running requests along with the request's identifying information (SPID, login etc), current resource consumption, query batch text, statement text, and XML query plan.
2010-05-24 (first published: 2009-05-01)
5,337 reads
2009-05-01
4,500 reads
2009-04-30
4,068 reads
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If I create a multiple column Primary Key constraint, what is the most number of bytes I can include in the constraint?
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