Technical Article

compare table counts in two databases

Sound like old hat ... but this procedure accepts the two database names as input parameters; therefore, it must dynamically generate the SQL and use Exec(@command) to execute it.   It also reports on tables that exist in one database but not the other ...  Finally, it uses count(*) to provide more accuracy than using sysindex […]

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2003-10-24

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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