Hidden RBAR: Counting with Recursive CTE's
"Counting" is essential to many high performance code techniques. SQL Server MVP, Jeff Moden, shows us how to make sure that we're "Counting" and not "Crippling" our trick-code.
2011-08-08
19,397 reads
Tally Table
Tally OH! An Improved SQL 8K “CSV Splitter” Function
The Tally Table has proven to be a simple and elegant method for avoiding many varieties of RBAR. Unfortunately, one of its more common uses, that of a CSV splitter, has a well-known and serious performance problem. MVP Jeff Moden shows us what that problem is and how to correct it. (UPDATED with additional info and attachments on 5/12/2011).
2012-12-28 (first published: 2011-05-02)
122,570 reads
Using GO Repeat To Fill Tally Table
Fill a small Tally table with a 1 column primary key using GO keyword to repeat an insert.
2010-08-18 (first published: 2010-08-16)
1,490 reads
Tally Table Uses - Part II
In part II of this series, Sioban Krzywicki shows us another way Tally Tables have helped solve problems - Text Parsing.
2010-08-03
9,175 reads
Tally Table Uses - Part I
In the first part of a series on Tally Tables, Sioban Krzywicki shows how a Tally Table has helped out with fiscal year calculations.
2010-08-02
15,948 reads
Tally Table - Character Date Validation
Tally (or numbers) tables are one of my favorite query writing tools. Such a simple premise that can be applied...
2009-12-17
3,185 reads
The Dynamic Tally or Numbers Table
Building a tally table is a common T-SQL problem that many new developers struggle with. Lynn Pettis brings us an article that shows how to use CTEs to accomplish this.
2009-09-22
10,456 reads
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs
In Part 1, we learned how to make both Cross-Tabs and Pivots. In Part 2, we'll learn how to automate a very common type of Cross-Tab report and maybe learn some extra tricks on the way.
2010-04-30 (first published: 2008-12-03)
49,265 reads
RE: Drill Down Problems
The sample was not showing hidden when I would go through the "Edit Group" route, so this was how I setup my report. But when I went into the XML, it listed the hidden and toggle item properties. I didn't know they wee separate items and thought the Wizards (Edit Group, etc) read and wrote […]
2005-05-25
RE: Wat are the disadvantages of SELECT ... WITH (NOLOCK)?
I totally agree with ron... it's better to have less data that is accurate than all the data that might be...
2005-04-28
Blogs
Deadline for Microsoft MVP contributions is 20 March 2023
Since changing to the new MVP renewal model, Microsoft MVPs have had until 31...
Goal Progress for Jan 2023
By Steve Jones
The grade for January is a D. Details below, but just not making a...
Context Info Across Databases–#SQLNewBlogger
By Steve Jones
Does Context Info work across databases? This post shows it does. Another post for...
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