2025-07-16
475 reads
T-SQL
DISTINCT and UNION: What happens when you use them together?
When I was perusing my LinkedIn feed the other day, I came across this thread about using SELECT *. In one of the replies, Aaron Cutshall noted that: “Another real performance killer is SELECT DISTINCT especially when combined with UNION. I have a whole list of commonly used hidden performance killers!”
2025-07-04
2025-06-27
391 reads
2025-06-20
534 reads
2025-06-18
904 reads
2025-06-16
842 reads
2025-06-13
847 reads
2025-06-11
1,398 reads
Techniques to query Azure SQL’s new JSON Datatype
The new JSON field type and new functions in Azure SQL brings a new world of possibilities for JSON manipulation in SQL Databases. These features are slated to be a part of SQL Server 2025 as well. Let’s analyze some practical uses of these features
2025-06-09
2025-06-09
1,307 reads
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Question of the Day
Transaction Log Truncation
In SQL Server 2025, where can I find information about items that prevent or delay the transaction log truncation?
See possible answers