Should you always use EXISTS rather than COUNT when checking for the existence of any correlating rows that match your criteria? Does the former really offer "superior performance and readability". Louis Davidson investigates.
2019-11-28
In this last article in the series, Robert Sheldon discusses ten guidelines that will help organisactions implement DevOps successfully.
2019-11-27
Window functions can be life savers by making a complicated SQL calculation easy. A window function combines that logic and provides row by row or window by window feedback. Read on to learn more!
2019-11-26
Australia and New Zealand’s leading cloud account software provider Xero needed a cost-effective monitoring solution with better features and coverage. Read Xero’s story about how they switched from their old monitoring tool to Redgate’s SQL Monitor.
2019-11-26
We participate in auctions all the time even when we don’t realize it. In this article, Joe Celko discusses the many different types of auctions and how they work.
2019-11-25
SQL Server Post Update Failure | Troubleshooting - In this tip we look at the steps to recover missing SQL Server mssqlsystemresource database files that cause SQL Server not to startup. This can occur when an update to SQL Server does not complete successfully therefore making these files absent from the folder where they need to reside.
2019-11-22
Phil Factor demonstrates some simple examples of how to use SQL Clone's PowerShell library to pass objects between cmdlets, and simplify common tasks, such as creating and deploying clones from various images. He then documents the objects and cmdlets, and illustrates their inputs and outputs.
2019-11-22
Every index has a matching statistic with the same name, and each statistic is a single 8KB page of metadata that describes the contents of your indexes. Stats have been around (and been mostly the same) for forever, so this is one of the places where SQL Server’s documentation really shines: Books Online has a ton of information about statistics. You honestly don’t need to know most of that – but if you wanna make a living performance tuning, there’s a ton of great stuff in there.
2019-11-21
Managing 100s of business-critical servers across multiple continents became a struggle for BMW. SQL Monitor provided a fast and powerful solution that allowed them to scale to their business needs. Availability has since increased to 100% and doubled the speed of delivery. Learn how here.
2019-11-21
At Redgate, we research DevOps, write articles, whitepapers and other content about DevOps, and talk a lot about DevOps. We actively encourage our customers to introduce database DevOps too, using our portfolio of database development solutions. But here’s the thing. We don’t do it to sell software. We do it because we believe in it. Reda on to find out why.
2019-11-20
By Steve Jones
This month we have a new host, Meagan Longoria, who graciously agreed to help...
By Steve Jones
I’m at the UK Redgate office today, meeting with senior leaders in all areas...
Optimizing Azure SQL Database performance often begins with identifying the most resource-intensive queries. Understanding...
I’m currently researching the best wireless credit card terminal for a growing business and...
Comments posted to this topic are about the item Creating a JSON Document IV
By VishnuGupthanSQLPowershellDBA
Comments posted to this topic are about the item Restoring Azure Key Vault Keys...
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