PowerBI

SQLServerCentral Article

An Introduction to Power BI

  • Article

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, […]

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2021-07-12

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SQLServerCentral Article

Power Query or SQL Server? Which, when and why

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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 […]

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2021-01-25

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Question of the Day

ORDER BY alias

There is a table tmp_tab:

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression:
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

See possible answers