Samuel Vanga

Sam Vanga helps business people solve their data problems and enables them make data-driven-decisions. His specialties include data integration, data warehouse and database development, and BI design. Sam blogs at http://SamuelVanga.com.

Blog Post

Standardize Table Aliases

What's wrong with the following code?
tsqlLine number Off | Hide | Select allSELECT    a.[BusinessEntityID]    , b.[FirstName]    , b.[LastName]FROM[HumanResources].[Employee] a    INNER JOIN [Person].[Person] b    ON...

2013-03-05

783 reads

Blog Post

Standardize Table Aliases

What’s wrong with the following code?
SELECT
a.[BusinessEntityID]
, b.[FirstName]
, b.[LastName]
FROM [HumanResources].[Employee] a
INNER JOIN [Person].[Person] b
ON b.[BusinessEntityID] = a.[BusinessEntityID]Nothing – except for my...

2013-03-05

895 reads

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Forums

Rollback vs. Roll Forward

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Rollback vs. Roll Forward

Foreign Keys - Foes or Friend?

By utsav

Comments posted to this topic are about the item Foreign Keys - Foes or...

Fun with JSON I

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Fun with JSON I

Visit the forum

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