What Happened to Hadoop?
For a time, it seemed that everyone wanted to build a Hadoop system. The world has changed, and that's not as popular an idea as it used to be. Today, Steve has a few thoughts.
2020-03-02
536 reads
Hadoop
2019-09-19
530 reads
2019-09-12
507 reads
SQL Server Integrates Hadoop and Spark out-of-the box: The Why?
Why has Microsoft added new capabilities in SQL Server to connect to other types of data sources? Read on to learn more.
2021-05-14 (first published: 2019-09-09)
10,593 reads
SQL-On-Hadoop: Hive - Part I
Running Interactive and Batch SQL Queries on Hadoop and other distributed clusters using SQL.
2019-07-19 (first published: 2017-07-26)
12,675 reads
Getting ready for Hadoop
Before adopting Hadoop into your organisation there are a number of factors to consider. This article highlights some of the key points.
2015-11-23
6,376 reads
2015-10-20
4,016 reads
Hadoop For SQL Folks: Architecture, MapReduce and Powering IoT
As the de-facto big data processing and analytics engine, the Hadoop ecosystem is also leading the way in powering Internet of Things (IOT)
2016-12-02 (first published: 2015-08-06)
12,466 reads
A Beginners Look at Hadoop
Hadoop has been making a lot of noise in the Big Data world. Despite my lack of Linux experience I decided to take the plunge and this is what I found.
2015-01-01 (first published: 2013-06-05)
24,179 reads
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Fun with JSON II
Comments posted to this topic are about the item Fun with JSON II
Changing Data Types
Comments posted to this topic are about the item Changing Data Types
Question of the Day
Fun with JSON II
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 t1.[key] AS row,
t2.*
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t1
CROSS APPLY OPENJSON(t1.value) t2; See possible answers