Data Compression Double Take
A lot has been written about the potential performance benefits of SQL Server data compression; but hard performance data? Not so much.
2012-03-05
267,356 reads
Tony Davis
- Interests: football, modern literature, real ale
Data Compression Double Take
A lot has been written about the potential performance benefits of SQL Server data compression; but hard performance data? Not so much.
2012-03-01
338 reads
Testing times
Databases are unique in IT that they are singularly resistant to 'best practice' advice. Any such advice can never be anything other than a starting position for tests in your own environment.
2012-01-23
69 reads
Virtualization and the existential angst of the DBA
Tony Davis reflects on the existential angst felt by the DBA separated from his or her hardware.
2011-12-19
112 reads
Gold in the Execution Plan hills
There's more information hidden behind those graphical plans than you might first suspect.
2011-10-31
224 reads
Where are all the MVBs?
Whereas there are plenty of experts prepared to help with the technology, few seem to come forward when the struggle is against the bureaucracy rather than a recalcitrant server. Where are all the SQL MVBs (Masters at Vanquishing Bureaucracy) when you need them!?
2011-09-26
138 reads
Being an extremely productive DBA
In order to gain better support for learning and training opportunities, the DBA needs to prove a direct link to productivity and results, in words and numbers the CEO will understand.
2011-07-18
266 reads
Cloud Barriers
I'd like to hear the thoughts of DBAs out there on Windows and SQL Azure, and the prospects of moving applications and databases into the clouds. How many DBAs work for companies that have done it or are seriously considering it? What are the deepest concerns?
2011-07-04
92 reads
DBAs on ACID
Any DBA who has been bitten by these subtle data integrity issues, or reports that erratically produce the wrong results, will know how much careful testing is involved in mitigating them.
2011-04-04
274 reads
Let the optimizer drive
For many, there is something disconcerting in the idea of the Query Optimizer; they crave control, but it really is best to take a back seat and let the Optimizer do its job.
2011-02-07
200 reads
Blogs
T-SQL Tuesday #192: What career risks have you taken?
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
AI: Blog a Day – Day 3: LLM Models – Open Source vs Closed Source
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
How to Parameterize Fabric Linked Services in Azure Data Factory for Azure Devops Deployment
Quite the title, so let me set the stage first. You have an Azure...
Forums
how to write this query?
hi everyone I am not sure how to write the query that will produce...
Rollback vs. Roll Forward
Comments posted to this topic are about the item Rollback vs. Roll Forward
Foreign Keys - Foes or Friend?
Comments posted to this topic are about the item Foreign Keys - Foes or...
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