Five Mistakes Performance Tuners Make
Erik Darling explains why your queries aren't scaling in production.
Azure DWH part 15: PolyBase and Azure Data Lake
In this article, we will learn how to query a csv file stored in the Data Lake using PolyBase.
Introduction to Azure Cosmos DB
Azure Cosmos DB is the latest data service offering from Microsoft. Azure Cosmos DB is a super set of DocumentDB and provides a new set of capabilities. These capabilities make Azure Cosmos DB stand out from other members in the NoSQL database family.
SQL Server in Space - HASSP
A successful launch, and recovery, of SQL Server running below a balloon.
Time Traveling with Temporal Tables on SQL Server 2016
One of the new features of SQL Server 2016 is the ability to time travel in your databases and visit a specific table at a specific point of time in history. You can also use this feature to audit changes or “undo” whole data warehouse updates.
Protecting production data in non-production environments
In this article, Grant Fritchey looks at the need to ‘shift left’ the database and associated database testing, while keeping sensitive data secure when it is outside the production...
Statistics in SQL: The Mann–Whitney U test
Phil Factor shows how to use the Mann-Whitney U test in SQL to to find out whether two samples come from the same distribution.
Improving Log Shipping
Today Steve Jones looks at possible ways to improve log shipping and asks for your input as well.
Blogs
Track SQL Server Configuration Changes Using the Error Log
By SQLPals
Track SQL Server Configuration Changes Using the Error Log If you...
Data Engineering Books Worth Having on Your Shelf (or your tablet)
Good documentation gets you started. Good books get you deep. After years of working...
SSMS Evaluation – future ready
By Vinay Thakur
In previous posts, we looked at the SQL Server engine. for us DBAs, the...
Forums
SQL Server Showing Out of Space But Plenty of Drive Space
We have a SQL Server installed. We have a 500GB drive for the database....
Creating a JSON Document IV
Comments posted to this topic are about the item Creating a JSON Document IV
Restoring Azure Key Vault Keys and Validating SQL Server TDE Recovery: Level 7 of the Stairway to TDE
By VishnuGupthanSQLPowershellDBA
Comments posted to this topic are about the item Restoring Azure Key Vault Keys...
Question of the Day
Creating a JSON Document IV
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT YearEstablished, json_objectagg(city : TeamName) FROM dbo.NFLTeams GROUP BY YearEstablished;See possible answers