SQL IS NULL and SQL IS NOT NULL Examples
This article looks at how to use SQL IS NULL and SQL IS NOT NULL operations in SQL Server along with use cases and working with NULL values.
2024-12-02
T-SQL
2024-11-29
525 reads
2024-11-22
475 reads
New SQL Server 2022 Functions
There were a number of T-SQL functions added in SQL Server 2022. Today Steve asks if you are using any of these in your work.
2024-11-22
916 reads
Should That Be One Update Statement or Multiple?
Let’s say we have a couple of update statements we need to run every 15 minutes in the Stack Overflow database, and we’ve built indexes to support them:
2024-11-20
2024-11-21 (first published: 2024-11-20)
517 reads
2024-11-18
559 reads
2024-11-12 (first published: 2024-11-11)
417 reads
2024-11-06
510 reads
Optimize SQL LIKE Wildcard Searches
Learn about different ways to improve the performance of full wild card text searches to find strings in SQL Server tables.
2024-11-01
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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