Tech Lunch News
Predminulý týden (10. listopadu 2021) jsme porádali už nekolikátý verejný Tech Lunch. Jde o pulhodinový call, na kterém pravidelne prezentujeme novinky ze sveta dat (datové sklady, Azure, SQL Server,...
2021-11-23
13 reads
Power BI – Hungry Median – Aggregations
Introduction In my last blog post, I have addressed an issue with DAX Median function consuming a lot of memory. To refresh the result, below is the performance summary...
2020-12-10 (first published: 2020-12-01)
230 reads
Power BI – Hungry Median
Introduction Median is a useful statistical function, which first time appeared in SSAS 2016 and in Power BI around that year as well. There are several articles on how...
2020-12-08 (first published: 2020-11-24)
333 reads
SSAS Tabular – Process Add vs Partition Merge
Time keeps on running and as I promised in my last article I would like to compare the Process ADD vs Partition Merge technique. In the previous blog I...
2020-06-11 (first published: 2020-05-25)
446 reads
Azure Analysis Services – Processing Hot & Cold Data using Tabular model partitions
Introduction Recently have been working on a “Proof of Concept” task where I wanted to test the capabilities of Azure Analysis Services Tabular model when loading data from different...
2020-04-07 (first published: 2020-03-30)
988 reads
SSAS Tabular – Process Add memory consumption
For me it’s a bit surprising how little information can be found regarding the “Process Add” option which I consider as the best choice for incremental data load to...
2020-01-23
61 reads
Query Performance Tuning with Filtered Statistics
Introduction I recently got a call from our DBA telling me that the CPU usage is hitting 100% on the DB server and the ETL process runs for more...
2019-09-04 (first published: 2019-08-26)
687 reads
How to get Live Execution Plan using Extended Events
Introduction
Have you ever found yourself in a situation where you were supposed to troubleshoot a long running expensive query that...
2019-03-06 (first published: 2019-02-19)
6,791 reads
Extended Events: Detect Implicit Conversions that affect execution plans
Implicit Conversions – Introduction
In this blog post, I’ll explain and demonstrate how to use Extended Events to detect Implicit Conversions that...
2019-01-24 (first published: 2019-01-15)
2,847 reads
Clustered Column Store Load Pitfalls – Magic number 64 when using WHERE IN clause
The Problem
During our workload we have recognized a difference in performance for queries using IN clause. We are building query...
2018-12-18
176 reads
Blogs
Cultural Change: Fostering a Cost-Aware Culture in Your Organisation
By HeyMo0sh
After working deep in cloud operations, I’ve learned that FinOps isn’t really about dashboards...
Beyond VARBINARY: How to Store PDFs in SQL Server Using FILESTREAM and FileTable
By gbargsley
Hello, dear blog reader. Today’s post is coming to you straight from the home...
Impactful Sessions I’ve Seen: T-SQL Tuesday #196
By Steve Jones
This month I’m thrilled that Steve Hughes is hosting. I’ve read this Data on...
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Question of the Day
Creating a JSON Document I
I want to create a JSON document that contains data from this table:
TeamID TeamName City YearEstablished 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933If I run this code, what is returned?
SELECT json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
See possible answers