2022-05-06
511 reads
PowerBI
An Introduction to Power BI
Introduction Power BI is a collection of software services, apps, and connectors working together. It helps to connect different data sources and get visually immersive and interactive insights from the data. Power BI creates powerful reports to be shared with others, as required. Data may be connected from different sources including files, databases, Azure services, […]
2021-07-12
8,355 reads
Create Calendar Table Using Power Query M Language
Learn how to create a customizable calendar date table that can be used for Power BI reports using Power Query.
2021-03-03
Power Query or SQL Server? Which, when and why
When it comes to developing a Power BI report, we can use it for accessing data, transforming the data, and turning the data into information using visuals. With no doubt Power BI can do the job from beginning to end. Now, this is not the only, nor necessarily the best, tool for all the steps […]
2021-01-25
17,129 reads
Staying Current on Power BI Dashboards
Power BI Dashboards can be kept current using simple DAX formulas in your data models. Save yourself time and energy by understanding how dashboard tiles work on PowerBI.com and what can be done to set your dashboards to a current period.
2018-03-01
3,686 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
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Answering Questions On Dropped Columns
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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