It's just Emanuele showing you what you can do in the Microsoft Data Platform


Can a single query deadlock itself? Apparently, yes: A curious case of Intra-query Parallelism


Imagine that you’re in a SQL data warehouse in the middle of the night, a single stored procedure is running, is nothing else, and it’s simply doing inserts and updates, one statement at the time, but then.. Deadlock. How can it be? Something else must be running, right? Someone launched something else, or a transaction was left open the day before, or the Russians were spying...

Creating a Perfmon and Filestats reports in PowerBI [Part 1]


If you work for a big company, you may have a bunch of instances/databases under your control, you ran whatever monitoring tool has been provided and everybody is happy; But if your’re like me and you’re working for a big number of customers, each one with a different version of SQL and own configuration/security policies, with no monitoring tool directly available, and have to answer...

How to get and decode callstacks in in extended events for recent versions of SQL Server


The other day I was reading about spinlocks and troubleshooting and it mentioned to get the callstack for a certain xevent and to decode it using the windows debugging symbols, however, that material was related to SQL Server 2012 and the steps weren’t basically replicabile for a modern version like SQL 2016/2017 (or even 2014 I think, but haven’tn checked personally), I searched...

THREADPOOL, or, Why is SQL server not responsive even the CPU is basically idle?


It’s a late Friday afternoon, this means that somebody is going to tell you that the server is unresponsive, users are blocked and there is a imperative deadline for the business at 6PM (which you think is probably because they don’t want to be late to the happy hour), so you do what you do best: sigh and log on to see what’s going on with this instance. You fire up SSMS, and...

It's just Emanuele showing you what you can do in the Microsoft Data Platform

Emanuele Meazzo

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