2018-05-11
680 reads
Extended Events (XE)
2018-04-24
705 reads
2018-04-23
728 reads
2017-10-10
774 reads
2017-09-14
753 reads
Performance Tuning Using Extended Events: Part 3
Identifying Performance Tuning Opportunities Using Extended Events: Part 3 Aggregate Report
2019-12-20 (first published: 2017-05-04)
6,148 reads
Performance Tuning Using Extended Events: Part 1
In this article, learn how to identify performance tuning opportunities using Extended Events.
2019-12-06 (first published: 2017-04-20)
18,503 reads
2015-11-23
1,163 reads
Capture Execution Plan Warnings using Extended Events
Erin Stellato of SQLskills shows how to use Extended Events to monitor for query plans with certain characteristics, such as joins missing predicates, columns missing statistics, and unmatched filtered indexes.
2015-11-13
2,571 reads
Use Extended Events to Get More Information About failed SQL Server Login Attempts
You may have cases where an ancient application is using an old login or the wrong password. SQL Server is great about auditing failed logins and recording that they happened; it is not so great, however, at providing enough information to locate them. Aaron Bertrand offers some help.
2014-05-02
3,423 reads
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The Empty Aggregate
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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