Technical Article

XTAB - CROSSTAB UTILITY

sp_XTAB (prototype) produces pivoted (crosstab) views/output with a minimum of fuss.No messing with code, just tell XTAB what you want to pivot.Tested to 764 pivoted columns, XTAB can generate up to 63000 characters of dynamic sql. Example (deliberately over-simplified)----------------------updated 27 January 2004Use NorthwindEXEC sp_XTAB 'Northwind','xtEMPL_COUNTRY','Orders','EmployeeID','ShipCountry', '', 'OrderID','COUNT','NULL', '', 'SELECT xtEMPL_COUNTRY.* FROM xtEMPL_COUNTRY' -- Include optional […]

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2004-01-24

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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