Pattern Matching : More Fun When I Was a Kid
Aaron Bertrand runs some tests to challenge an assertion that CHARINDEX is always faster at pattern matching than LEFT and LIKE.
PowerShell Solutions - Working with files
When we administer a SQL Database, we always have to work with files. This new article shows how to handle them using PowerShell.
Questioning the Interviewer
Asking questions in an interview is important, but there can be issues. Steve Jones talks a little about how to approach this.
Managing SQL Server Backup and Restore History Information
Greg Larson explains that SQL Server provides a couple of different ways to delete backup and restore history. If you want to remove backup and restore information for all databases based on a date you can use the sp_delete_backuphistory system stored procedure. Or you can use the system stored procedure named sp_delete_database_backuphistory if you want to remove all backup and restore history for a specific database.
Coming Attacks
What happens if we can't access the Internet? We should be prepared, at home and work. Steve Jones has a few comments.
Constant Data Types
Data types are an important part of how tables and variables work. Did you know that constants have databases too?
Intelligence from Data
This week Steve Jones looks at the idea of using AI and machine learning with your data to develop amazing new insight.
Predicates With Subqueries
The ALL, SOME and ANY predicates aren't much used in SQL Server, but they are there. You can use the Exists() predicate instead but the logic is more contorted and difficult to read at a glance. Set-oriented predicates can greatly simplify the answering of many real-life business questions, so it is worth getting familiar with them. Joe Celko explains.
The Exciting World of Data
Steve Jones gave a keynote, and has a little fun this week with the topic of his talk.
SQL Server for Linux
Although SQL Server for Linux removes the concern that adopting SQL Server forces you to also adopt the Windows platform, it could also provide a useful alternative platform, and a more obvious alternative to Oracle. There are, however, several obvious concerns as to how such a product could ever achieve parity with the existing Windows-based product. Microsoft have made an interesting move with several ramifications, as Robert Sheldon explains.
Blogs
T-SQL Tuesday #198–Change Detection
By Steve Jones
This month we have a new host, Meagan Longoria, who graciously agreed to help...
Redgate and Rome
By Steve Jones
I’m at the UK Redgate office today, meeting with senior leaders in all areas...
Quick Tip: Check Most DTU Expensive Queries in Azure SQL Database
Optimizing Azure SQL Database performance often begins with identifying the most resource-intensive queries. Understanding...
Forums
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...
Permissions Removal When Changing Object Schema
When the schema of an object is changed, SQL Server wipes out the previous...
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