2023-07-18 (first published: 2010-03-18)
2,131 reads
T-SQL
2010-12-30 (first published: 2010-03-18)
2,481 reads
Credit Card Number Validation Escalar Function
Evaluate credit card numbers based on ISO 2894 algorithm.
2010-03-24 (first published: 2010-03-17)
1,923 reads
An Urgent Ad Hoc Report
In this new article, Yakov Shlafman shows us how he wrote a quick ad hoc report of expenses so that he could leave on time one day.
2010-03-17
8,136 reads
T-SQL: Why “It Depends”
Why does everyone use "it depends" as an answer to many T-SQL questions? Bob Hovious brings us a short example of how performance can change based on data loads for the same code.
2010-03-16
13,263 reads
2010-03-11
4,748 reads
2010-03-09
4,367 reads
Procedural, Semi-Procedural and Declarative Programming in SQL
A lot of the time, the key to making SQL databases perform well is to take a break from the keyboard and rethink the way of approaching the problem; and rethinking in terms of a set-based declarative approach. Joe takes a simple discussion abut a problem with a UDF to illustrate the point that ingrained procedural reflexes can often prevent us from seeing simpler set-based techniques.
2010-03-09
3,459 reads
2010-03-08
4,672 reads
2010-03-02
4,067 reads
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BIT_COUNT I
Comments posted to this topic are about the item BIT_COUNT I
Question of the Day
BIT_COUNT I
In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers