SQLServerCentral Article

Data Import Functionality Using SQL Server

Building robust functionality with maximum re-use of existing infrastructure and investment with little or no development is the goal for many businesses. This article is about using SQL Server DTS packages to achieve this goal. With minimum development, all the functionality required for data imports can be achieved with DTS programming in SQL Server.

SQLServerCentral Article

Deleting Duplicate Records

Data cleansing is something that constantly occurs in all RDBMSes, not just SQL Server. However it's easier on some platforms than others. New Author Sureshkumar Ramakrishnan has written a script that shows how you can easily remove duplicate rows in SQL Server. Read about his technique and see if it might come in handy in your environment..

SQLServerCentral Article

Index Creation Guidelines

Index Creation Guidelines for SQL Server can be pretty sparse. Usually there are a couple, clustered index for ranges, nonclustered, etc. Leo Peysakhovich has taken some time to write down his guidelines based on his experience for creating indexes and the rational for doing so. He's also taken a few minutes to look at which indexes NOT to create, something that might be worth knowing..

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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