I recently presented a session on the Query Store at Data Saturday Rhineland and the question came up: If there’s already a query hint on a query, what happens...
2023-07-10 (first published: 2023-06-26)
291 reads
I was given a little reward the other day. My son came home telling me that the manufacturing company he works for wants to build some custom test equipment using Arduino-style controller chips. I've been experimenting, pretty darned lightly so far, with these over the last year. He starts asking me about which controllers I […]
2023-07-01
75 reads
The difference between a low trust society (few individuals within a trust circle outside your family and/or tribe) and a high trust society (general trust of individuals beyond immediate family/tribe associations) generally speaking can be measured as the difference between a low tech (low trust) and high tech (high trust) society. Yes, exceptions abound, but […]
2023-06-03
103 reads
The invitation this month for #PGSqlPhriday comes from Dian Fay. The topic is pretty simple, database change management. Now, I may have, once or twice, spoken about database change...
2023-06-02
26 reads
I’ve had people come up to me and say “PostgreSQL is open source and therefore license free. Why on earth would I put PostgreSQL in Azure?” Honestly, I think...
2023-05-17 (first published: 2023-05-08)
246 reads
I've found myself to be very distracted this week. Concentration on the task at hand has proven to be a challenge. I'm pretty sure the cause is that I just came off of three weeks of travel, which can be exhausting. Concentration, like so many things in life, requires energy. No energy, no concentration. So, […]
2023-05-06
111 reads
I live for questions and recently, I had someone ask me, does using SELECT * affect Query Store. My immediate gut reaction was, hell no. Of course it doesn’t....
2023-04-24 (first published: 2023-04-03)
406 reads
I’ve been seeing more and more noise about how ChatGPT can help with technical stuff, writing code, all that. Well, I wanted to know how best to set up...
2023-04-21 (first published: 2023-04-10)
812 reads
Today and tomorrow, as I write this, the Green Country Hamfest will be running up in Claremore, OK. Tomorrow morning, I'll be there to check out the tables and maybe pick up some new radio gear. I'll also be volunteering to help run the doors. Largely it involves just checking to be sure people paid […]
2023-04-08
79 reads
At the most recent SQL Bits, I gave two 20 minute sessions. I also gave one last year. There is a little bit of controversy around these (nothing real,...
2023-03-20
13 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