Useful T-SQL queries and scripts to work in SQL Server
This post is about some queries and scripts that I use in my daily work on SQL Server. Some of...
2018-12-26 (first published: 2018-12-05)
7,317 reads
Igor Micev
Useful T-SQL queries and scripts to work in SQL Server
This post is about some queries and scripts that I use in my daily work on SQL Server. Some of them are self-explanatory, i.e. the name of the query/script...
2018-12-05
428 reads
Useful T-SQL queries and scripts to work in SQL Server
This post is about some queries and scripts that I use in my daily work on SQL Server. Some of them are self-explanatory, i.e. the name of the query/script...
2018-12-05
58 reads
How to Write a Better T-SQL Code
Here are some basic guidelines that are good to consider when writing T-SQL (Transact SQL). These tips and hints are...
2018-11-28 (first published: 2018-11-16)
4,481 reads
How to Write a Better T-SQL Code
Here are some basic guidelines that are good to consider when writing T-SQL (Transact SQL). These tips and hints are aimed for the beginner-level T-SQL developers. Always Use a...
2018-11-17
21 reads
How to Write a Better T-SQL Code
Here are some basic guidelines that are good to consider when writing T-SQL (Transact SQL). These tips and hints are aimed for the beginner-level T-SQL developers. Always Use a...
2018-11-17
23 reads
2018-03-29
1,082 reads
The COUNT Function in T-SQL
The COUNT function is among the most used functions in the T-SQL codes. Even though COUNT is easy to use, it should be used carefully because it could often not return the desired result. For the big tables, the counting of the rows could cause blocking as well as take some more time.
2018-02-09 (first published: 2016-07-12)
10,973 reads
Some New Cool Features in SSMS
SSMS new versions come up with some cool features. The new features provide support for the SQL Server 2008 databases...
2017-12-28
901 reads
Some New Cool Features in SSMS
SSMS new versions come up with some cool features. The new features provide support for the SQL Server 2008 databases and onward. Vulnerability Assessment (active from SSMS 17.4) Right...
2017-12-28
9 reads
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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