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
Tony Davis
- Interests: football, modern literature, real ale
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
Is hyper-threading still relevant for SQL Server?
There still seems to be a lot of fear, uncertainty and doubt, in the community, with regard to use of Hyper-threading (HT) with SQL Server workloads. So, how and when should it be used?
2011-01-24
804 reads
RAID 5 and SQL Server
Given that disk storage has come down substantially in price over recent years, will RAID 5 continue to be relevant as a storage configuration for databases?
2011-01-10
815 reads
How will SSDs change SQL Server storage arrays?
If SSDs are about to make obsolete one of the major driving forces behind the development of SANs (disk latency) then how is the storage array going to change in the near future?
2010-12-06
514 reads
Can I really drop that index?
You believe that an index is unused and so could be removed, and yet, your finger hovers nervously over the metaphorical "delete" button. You can't quite bring yourself to do it. Is it really safe to drop this index? Tony wonders if "invisible indexes" might solve this dilemma.
2010-11-01
391 reads
DMVs: are they worth the effort?
Many of the SQL Server DMVs still have a wild, unfinished feel but they are an incredibly useful tool for DBA, well-worth the sweat and toil required to learn and query them effectively.
2010-08-23
452 reads
Clustered Indexes? Sedimentary, my dear Watson
There is much sound advice suggesting that every table should have a clustered index, and that narrow, integer, ever-increasing columns, such as afforded by an IDENTITY column are the best choice. But is the sedimentary approach really the natural order of the day?
2010-05-24
457 reads
Blogs
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Whiling away an afternoon, thinking
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I come to Heathrow often. Today is likely somewhere close to 60 trips to...
Forums
Fun with JSON II
Comments posted to this topic are about the item Fun with JSON II
Changing Data Types
Comments posted to this topic are about the item Changing Data Types
Answering Questions On Dropped Columns
Comments posted to this topic are about the item Answering Questions On Dropped Columns
Question of the Day
Fun with JSON II
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 t1.[key] AS row,
t2.*
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t1
CROSS APPLY OPENJSON(t1.value) t2; See possible answers