In the first level of the Stairway to Database Containers, we learn how to get started with Docker for Windows, downloading an image, and starting a container.
2024-07-28 (first published: 2019-02-04)
5,104 reads
SSAS (SQL Server Analysis Services) is available in two modes, tabular and multidimensional. The new tabular model is easier for those companies who are not already invested in the traditional, multidimensional model. In this stairway, Thomas LeBlanc will teach you how to create tabular models used for reports and dashboards.
2018-06-13
13,377 reads
This level of the Stairway to Exploring Database Metadata focuses on indexes and all the information you can gather about them.
2020-08-05 (first published: 2016-09-28)
5,041 reads
A guide to using Visual Studio to create U-SQL projects and scripts.
2016-07-20
3,066 reads
In addition to the data that our clients and customers store in a database, there is a tremendous amount of meta data, 'data about data', that describes how the database is set up, configured, and what the properties are for the various objects. This stairway aims to demystify and explain how you can query and use this meta data to more effectively manage your SQL Server Databases.
2016-07-15
4,594 reads
Learn about the permissions associated with Dynamic Data Masking as well as some of the security implications of using this feature.
2022-05-25 (first published: 2016-06-29)
11,227 reads
As Microsoft continues to expand the Azure platform, they have enhanced its ability in ways that are quite different from what we've come to expect from SQL Server. Learn about the new language from Microsoft, U-SQL, designed to work with Data Lakes and Big Data in Azure.
2016-06-07
6,455 reads
Learn how to get started working with SMO and PowerShell.
2024-01-20 (first published: 2016-05-11)
13,938 reads
Erin Stellato, a Principal Consultant with SQLskills.com, explores the use of Extended Events as a diagnostic data collection tool or SQL Server. She describes how to define efficient low-overhead event sessions that exploit fully the vast number of events, as well as the powerful filtering and data collection options, offered by this new event collection infrastructure. She also demonstrates simple techniques to analyze event data and identify and troubleshoot the causes of poor SQL Server performance, such as long-running queries that consume vast amounts of CPU and I/O resources. It is time to embrace Extended Events and understand all that it has to offer, and Erin's stairway is the perfect place to start.
2015-12-01
6,458 reads
Sometimes you need to reach outside a database and access data and objects from multiple databases, which raises some security issues and increases the complexity of data access. In this stairway level, you’ll learn about cross-database ownership chaining so that you can reach across database boundaries securely.
2024-05-08 (first published: 2015-04-08)
11,324 reads
By HeyMo0sh
One of the biggest challenges I’ve faced in cloud operations is maintaining clear visibility...
By Steve Jones
I come to Heathrow often. Today is likely somewhere close to 60 trips to...
By Brian Kelley
If your organization is spending money, then meaningful results are a must. Pen testing...
Comments posted to this topic are about the item Fun with JSON II
Comments posted to this topic are about the item Changing Data Types
Comments posted to this topic are about the item Answering Questions On Dropped Columns
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