Comments Feed

Puzzle Me This: String Replacement Commented on: 12 weeks ago (April 10, 2015)

Here is my take at it.

DECLARE @Keyword NVARCHAR(1000) = N'wwAMxxAMyyAMzz',
@Source NVARCHAR(1000) = N'AM',
@Synonym NVARCHAR(1000) = N'AN';

DECLARE @Permutations INT...

Find a Minimum Missing Value Commented on: 33 weeks ago (November 14, 2014)

Slightly less cost. Reduce the WHERE clause like this

WITH C AS
(
SELECT col1, LEAD(col1, 1, 0) OVER(ORDER BY col1) AS nxt
FROM dbo.T1
)
SELECT TOP (1)...

Identifying a Subsequence in a Sequence, Part 3 Commented on: 50 weeks ago (July 15, 2014)

Thank you Itzik for this excellent walk-through!

Identifying a Subsequence in a Sequence, Part 1 Commented on: 1 year ago (February 6, 2014)

See my set-based solution in second part of this article.
1.5 seconds and 14 000 reads.

Identifying a Subsequence in a Sequence, Part 2 Commented on: 1 year ago (February 6, 2014)

Hi Itzik.

The problem is just another Relational Division; Ordered Relational Division. My solution finishes in just 1.5 seconds and uses about 14000 reads.

DECLARE @Items INT = (...

What's a good use for a UNIQUE filtered index? Commented on: 3 years ago (November 21, 2011) I use it to enforce data integrity in our data warehouse. Currently there are two business systems feeding the DW with data, and some tables (like Orders.SalesDetail) containts data from both systems...
Use T-SQL to Generate a Sequence Commented on: 3 years ago (August 22, 2011) Itzik, let me know if you got my script by email. //Peter
Solutions to TSQL Challenge – Reoccurring Visits Commented on: 3 years ago (July 14, 2011) Not bad Mr Celko. Not bad at all. It's clever to build a "dual date" cte holding yesterday's and today's dates. Add "sum(today_flg) as NumVisits," to the final output...
TSQL Challenge – Reoccurring Visits Commented on: 4 years ago (July 6, 2011) Here is my stats with 100,000+ row sample data using same date interval as original (8 row(s) affected) Table 'Worktable'. Scan count 0, logical reads 0. Table 'DailyVisits'. Scan...
Solutions to Packing Date and Time Intervals Puzzle Commented on: 4 years ago (March 25, 2011) Where is my #3? ;-)

Digital Magazine Archives

Browse back issues of SQL Server Pro, from January 2007 through the last issue published in April 2014. Find the back issues here.

 

From the Blogs
New Power BI Designer unifies the “power” tools
Jun 3, 2015
Article

Power BI Preview Gaining Market Momentum

As summer nears, the Power BI Preview is making bigger waves with every weekly release. Popular data sources and a plethora of Power BI Designer enhancements are being released at light speed pace. Check out the highlights on what has been released and what we might see next....More
Evolution of SQL Server continues
Jun 3, 2015
Article

What is Coming in SQL Server 2016 for Business Intelligence 1

Over the past few years we did not hear anything from Microsoft about SQL Server on-premises business intelligence enhancements. The extended cricket-chirping silence left us speculating about the future of Reporting Services, Analysis Services and other key technologies that are being used today to power critical decision making solutions. Good news, the waiting and wondering is over. Microsoft recently announced significant SQL Server on-premises upgrades for business intelligence in numerous presentations at both //build and Ignite conferences....More
May 28, 2015
blog

AlwaysOn Availability Groups and SQL Server Jobs, Part 25: Final Remarks on Backups

In the last few posts (posts 19 – 24) I’ve covered some high-level concerns and reviewed some details about how to implement and manage database backups against AlwaysOn Availability Group databases. Most of the information I’ve provided was pretty basic or elementary – along with some additional guidelines for things to watch out for when managing backups. Which is to say that backups are never something you can simply take for granted and they’re never something you just take lightly....More
SQL Server Pro Forums

Get answers to questions, share tips, and engage with the SQL Server community in our Forums.

Sponsored Introduction Continue on to (or wait seconds) ×