Knee-Jerk Performance Tuning: Incorrect Use of Temporary Tables
Paul Randal continues his knee-jerk performance tuning series, focusing on ways to optimize performance when using temporary tables.
2016-04-25
6,231 reads
Performance Tuning
Know read and write ratio before you tune database performance
A script to get the user table query ratio and update radio,etc
2015-12-21 (first published: 2015-12-11)
1,780 reads
Show running queries
Identify the current statement and its line number within a running batch. Includes a link to the execution plan, if available.
2016-08-08 (first published: 2015-03-03)
5,444 reads
Webinar: Performance Tuning .NET & SQL Code Using ANTS Performance Profiler
In this LIDNUG webinar, Mitchel Sellers walks through performance tuning best practices, and investigates how developers can use ANTS Performance Profiler to explore their application code and the SQL queries and execution plans behind it.
2014-12-05
7,720 reads
Premature Optimisation
Learning how to tune a system is a bit of science and a bit of an art. Gail Shaw gives some guidelines on when you might want to tune and how to go about it so as not to unnecessarily undertake the effort.
2014-09-22
5,897 reads
Find Currently Running Query – T-SQL
Following script retrieves the queries currently executing on the server.
2016-02-29 (first published: 2014-09-04)
3,365 reads
2014-02-06
1,440 reads
NameSQLinConfioIgnite (SolarWinds DPA)
This will name Ignite SQL hashes that have not been named yet, based on the object (or batch) they are within.
2015-02-18 (first published: 2014-01-25)
696 reads
Free eBook: Performance Tuning with SQL Server Dynamic Management Views
Dynamic Management Views (DMVs) are a significant and valuable addition to the DBA's troubleshooting armory, laying bare previously unavailable information regarding the under-the-covers activity of your database sessions and transactions.
2020-11-18 (first published: 2013-08-21)
108,349 reads
An Orders of Magnitude Problem (T-SQL Tuning)
When a query suddenly starts taking much longer, what do you do? This story from Jerry
2013-03-13
7,388 reads
Blogs
AI: Blog a Day – Day 4: Transformers – Encoder, Decoder, and Attention
By Vinay Thakur
Continuing from Day 3 where we covered LLM models open/closed and their parameters, Today...
Flyway Tips: Multiple Projects
By Steve Jones
One of the nice things about Flyway Desktop is that it helps you manage...
What DevOps Look Like in Microsoft Fabric
By HeyMo0sh
Microsoft Fabric (not to be confused with the more general term “fabric” in DevOps)...
Forums
Can an Azure App Service Managed Identity be used for SQL Login?
I'm fairly certain I know the answer to this from digging into it yesterday,...
Azure Synapse database refresh
Hi Team, I am trying to refresh the Azure Synapse Dedicated pool from production...
how to write this query?
hi everyone I am not sure how to write the query that will produce...
Question of the Day
Fun with JSON I
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t; See possible answers