Latches, Spinlocks & Lock-Free Data Structures – my SQLRally Nordic session
Whew, this was an intensive session about Latches, Spinlocks & Lock-Free Data Structures at the SQLRally Nordic conference in Copenhagen. I...
2015-03-04
589 reads
Whew, this was an intensive session about Latches, Spinlocks & Lock-Free Data Structures at the SQLRally Nordic conference in Copenhagen. I...
2015-03-04
589 reads
Today I have uploaded the 22th SQL Server Quickie to YouTube. This time I’m talking about the Buffer Pool in...
2015-03-02
683 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-08-01 (first published: 2014-07-28)
11,605 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-07-22
882 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-07-14
1,011 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-07-07
1,089 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-06-30
4,039 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-06-23
2,813 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-06-19
1,203 reads
(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan – you get a weekly email packed with all the...
2014-06-18 (first published: 2014-06-16)
2,979 reads
By HeyMo0sh
Over time, I’ve realised that one of the hardest parts of cloud management isn’t...
By HeyMo0sh
One of the biggest challenges I’ve faced in cloud operations is maintaining clear visibility...
By Steve Jones
I come to Heathrow often. Today is likely somewhere close to 60 trips to...
Comments posted to this topic are about the item Fun with JSON II
Comments posted to this topic are about the item Changing Data Types
Comments posted to this topic are about the item Answering Questions On Dropped Columns
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