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Today, two new service offerings for the Azure platform were introduced, DocumentDB and Azure Search. These are exciting in themselves and worth a look-see but, to me, they are also occurrences of the phasing out of the “database as an application Read More...
There’s a set of performance counters for the new In-Memory OLTP in SQL Server 2014. You might have overlooked them because they’re not with the other SQL Server counters, but are in their own group that begins with “XTP” (eXtreme Read More...
In mid-April, April 13-16 to be exact, the spring installment of SQL Intersection comes to Orlando. I’ll actually be there a little earlier and leave a little later than that. This conference has a whole lineup of speakers that like to add a little Read More...
This March, I’ll be presenting a 2-day seminar as part of AddSkills Expertseminarium series in Stockholm on “Performance and new developer features in SQL Server 2014″. I’ll start with techniques to measure and monitor query performance Read More...
The speed increase from memory-optimized tables in SQL Server 2014 is nice, but I thought, to get the most bang for your buck for really need to use compiled stored procedures in addition. After looking at some of the C code these produce, it almost looked Read More...
I’ve been doing some investigation of the new cardinality estimator in SQL Server 2014. I’ve always thought the best way to see how the estimation process worked was through the query_optimizer_estimate_cardinality XEvent. I wrote about this Read More...
I was looking through some in-memory OLTP DMVs in SQL Server 2014 and came across these in the DMV sys.dm_xtp_system_memory_consumers: WRITE_SET_LOOKASIDE SCAN_SET_LOOKASIDE READ_SET_LOOKASIDE Thought it might be nice to see how these work, but explain Read More...
I’d been doing some experimentation with memory-optimized table types in SQL Server 2014 and thought it was about time to write about it. Yesterday however, there was an excellent post on them at SQL Server team blog. So I’ll stay away from Read More...
Haven’t had time to blog much lately. Finding out strange and interesting things about SQL Server 2014 to present at some seminars and conferences next year. “Shameless self-promotion” posts for those events will be forthcoming. A few Read More...
So I was going through the features in SQL Server 2014, seeing how and where they fit into the canon of SQL Server’s T-SQL. I’m going to add some of this for my advanced T-SQL Immersion Event at the end of September. SQL Server 2014 is supposed Read More...
This post is a continuation of my previous posts on columnstore indexes in SQL Server 2014 CTP1 and query plans. The test bed is the same as in previous posts, based on an enlarged version of a fact table in AdventureWorks2012DW. One of the things that Read More...
This post is a continuation of my previous post about SQL Server 2014 Columnstore and Query Plans. I’ll take a look at how the new cardinality estimates affects columnstore index query plans. I’ve written a bit about the new cardinality estimator Read More...
Today I thought I’d try out some of the new, highly-touted columnstore improvements in SQL Server 2014. First off, to figure out what’s new I used three main sources: one is the “canon”, the whitepaper, “Enhancements to SQL Read More...
According to the whitepaper “Mission-Critical Performance and Scale with SQL Server and Windows Server” there’s a new cardinality estimator in SQL Server 2014. The whitepaper doesn’t say a lot about how it works, but does mention Read More...
Every new version of SQL Server includes new or expanded features that effect query plans. Most (sometimes not all) of the query plan changes (and most of the functionality changes) can be discovered by “diff-ing” the XML schema for query Read More...
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