Stairway to U-SQL Level 8: Joining Tables in U-SQL
U-SQL provides a number of ways to join data sources together. This articles introduces the joins available and how you can use them.
2016-09-14
3,574 reads
Mike McQuillan
Stairway to U-SQL Level 7: More Partition Schemes
Following on from our previous introduction to indexes and partition schemes, we review the distribution schemes used by horizontal partitioning.
2016-08-24
1,720 reads
Stairway to U-SQL Level 6: U-SQL Indexes and Partition Schemes
Find out how to speed up your queries by indexing and partitioning data, U-SQL style.
2016-08-10
3,284 reads
Stairway to U-SQL Level 5: Databases and Tables in Azure Data Lakes with U-SQL
A guide to using databases, schemas and tables in Azure Data Lakes, using (of course!) U-SQL.
2016-07-27
3,196 reads
Stairway to U-SQL Level 4: U-SQL and Data Lake Tooling with Visual Studio
A guide to using Visual Studio to create U-SQL projects and scripts.
2016-07-20
3,065 reads
Guide to MCITP: SQL Server 2008 BI Developer
A guide to the SQL Server 2008 Business Intelligence exams.
2012-05-11
12,400 reads
2011-10-04
2,484 reads
Guide To MCITP: SQL Server 2008 Administration
Find out what you need to learn for the SQL Server 2008 Administration certification exams.
2011-08-05
9,010 reads
Guide to MCITP: SQL Server 2008 Developer
An overview of what's involved in the two exams you need to pass to become a Microsoft IT Professional in SQL Server 2008.
2009-08-21
10,659 reads
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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