Recompile Monitoring using XEvents
How recompiles can hurt you, and how you can hunt them down using sql_statement_recompile.
2016-03-07
34 reads
Simple SQL Server
I/O Baseline Comparison – Idera Diagnostic Manager
What servers need the most attention when it comes to I/O? When I increase the memory on a server what...
2016-02-29
940 reads
I/O Baseline Comparison – Idera Diagnostic Manager
What servers need the most attention when it comes to I/O? When I increase the memory on a server what effect does it have on I/O? What was it...
2016-02-29
25 reads
Wait Stats Baseline Comparison – Idera Diagnostic Manager
Database servers have to wait on different resources, and these waits are huge to the performance of SQL Server. Sometimes...
2016-02-22
692 reads
Wait Stats Baseline Comparison – Idera Diagnostic Manager
Database servers have to wait on different resources, and these waits are huge to the performance of SQL Server. Sometimes something changes without our knowledge and is running differently...
2016-02-22
28 reads
Shrinking Database Log Files
Files in SQL Server need to grow as the database grows, and in very specific circumstances need to be shrunk...
2016-02-15
1,291 reads
Shrinking Database Log Files
When should you shrink your log files and what does it mean to performance?
2016-02-15
137 reads
Database Log VLFs
Virtual Log Files (VLFs) split a physical database log file into smaller segments, which are required for how log files...
2016-02-08
802 reads
Database Log VLFs
Transaction logs are split into VLFs which affects performance. How large are yours and what does that mean for you?
2016-02-08
93 reads
TempDB Excessive Memory Usage Example
I see TempDB using more memory than I feel it should and found a way to resolve it. Previously I...
2016-02-05 (first published: 2016-02-01)
2,756 reads
Blogs
The flight recorder: Replaying what an AI agent did on my SQL Server
By Arun Sirpal
“What exactly did it do on my server?” is the first question a DBA...
Announcements from the Microsoft Fabric Community Conference — Barcelona 2026
By James Serra
Microsoft shared a broad set of Fabric, Power BI, and SQL updates at FabCon...
Au Revoir for now
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
Forums
Let's Talk Certifications
Comments posted to this topic are about the item Let's Talk Certifications, which is...
The Hidden Security Risks of Role Combination in SSAS Tabular
Comments posted to this topic are about the item The Hidden Security Risks of...
The Empty Aggregate
Comments posted to this topic are about the item The Empty Aggregate
Question of the Day
The Empty Aggregate
I have this table in a SQL Server 2025 database:
CREATE TABLE [dbo].[CustomerOrder] ( [OrderID] [int] NULL, [CustomerID] [int] NULL, [total] [money] NULL ) ON [PRIMARY] GOWhat is returned from this code? (answers are for the sum and then the count)
SELECT SUM(total) AS sum,
COUNT(total) AS count
FROM dbo.CustomerOrder;
See possible answers