TSQL Challenge - Table Truncation - 29 Jul 2011 Commented on: 3 years ago (July 30, 2011) How important is it that the view V1 reports the correct values throughout the (fast clearing) operation?
TSQL Challenge: Packing Date and Time Intervals Commented on: 4 years ago (January 29, 2011) Is anything to be gained from taking advantage of the 60-minute maximum for a session in the test data, Itzik?
T-SQL Challenge with SQL Server 2012’s Sequence Object Commented on: 4 years ago (December 16, 2010) Most efficient way I can think of is to have the sequence INCREMENT BY 2 each time, and insert (NEXT VALUE FOR dbo.Seq1) and (NEXT VALUE FOR dbo.Seq1 + 1) into key1 and key2 (respectively) in T1....
SQL Server 2012 T-SQL at a Glance – Sequences Commented on: 4 years ago (November 23, 2010) I believe I'm right in saying that other than column order, the order of items in the SELECT list doesn't mean anything - so it would be wrong for SQL Server to arbitrarily provide e.g. 1 as the...
Geekiest Sig Challenge Commented on: 5 years ago (February 1, 2010) Now that's just geeky to the max! If you had written a .Net app to pull out the pixel positions I'm not sure whether it would've been more or less geeky, mind. :)
Solutions to Logic Puzzle - Crossing a Desert Commented on: 5 years ago (December 9, 2009) The only trouble is, Itzik, that when you return to the first spot where you deposited the food you find it has been eaten by camels! Thankfully, you capture one of them, ride it for three days...
Solutions to T-SQL Challenge - Efficient Partitioned TOP Commented on: 5 years ago (October 30, 2009) You can cheat by relying on the randomness of the data inserted into the table an put "WHERE col1 > 95" at the end of the inner query - limiting the size of the sort. Not recommended for production...
Virtual Auxiliary Table of Numbers Commented on: 5 years ago (October 30, 2009) I've tried the recursive approach you suggest, oddsock and as per article #94376, having the OPTION within the function doesn't work (syntax error) - it'd be a huge pain to have to remember to...
T-SQL Challenge - Duplicating Form Entries Commented on: 5 years ago (August 25, 2009) ccasimor - yes it is possible to insert into two tables in a single statement in SQL Server 2008.
Optimizing a Suboptimal Query Plan Commented on: 5 years ago (March 26, 2009) Hi Itzik, Further to my earlier reply - here are some timings (T1 w/ 1,000,000 rows, col2 'pseudorandomizedish' - SQL Server w/ 768MB RAM, testdb and tempdb on separate disks). Original query: 29s...

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Feb 25, 2015
Commentary

Data Profiling to the Rescue by Pushing Metadata Boundaries

Don’t let bad data sneak up on you when and where you least expect it. Ferret out bad data with Melissa Data’s newest Profiling Component for SSIS. Learn how to take control of your data using knowledge-base-driven metadata. The truth shall set you free!...More
Feb 11, 2015
blog

AlwaysOn Availability Groups and SQL Server Jobs, Part 17: Creating Jobs to Check on Synchronization

In my previous post, I provided a high-level outline of the core logic (and rationale behind that logic) that would be needed to set up regular synchronization checks on SQL Server Agent Jobs for servers where AlwaysOn Availability Groups have been deployed. In this post, I’ll walk through the steps--and the code--needed to setup those checks....More
Jan 22, 2015
blog

AlwaysOn Availability Groups and SQL Server Jobs, Part 18: Health Checks for Availability Groups

Now that we’ve outlined the process to let servers in a SQL Server AlwaysOn Availability Group "talk to each other" by means of setting up linked servers, it’s possible to set up some additional or improved checks on Availability Group Health....More
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