T-SQL

SQLServerCentral Article

Collation Error 468

  • Article

Most DBAs don't ever deal with multiple languages or different collation and sort order settings in SQL Server, but it can be a handy piece of information to have. Steve Jones brings us a quick look at a problem in comparing data across databases.

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2007-10-11

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Technical Article

Handling NULL values in SQL Server 2005

  • Article

In the simplest terms, a NULL value represents an unknown value. It's unknown in the sense that the value is: missing from the system, may not be applicable in the current situation, or might be added later. NULL values are different than any other value and are sometimes hard to compare and handle.

2007-09-20

3,550 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