The previous levels of this stairway describe details, features, and limitations of columnstore indexes in SQL Server. But they do not answer what should be the first question for every database professional: should columnstore indexes be used in my databases; on what tables should they be used; and should they be clustered or nonclustered columnstore indexes?
Credit card fraud detection is an important application of machine learning techniques, including Decision Trees. The goal is to identify and detect fraudulent transactions and separate them from valid transactions to prevent financial loss and protect user accounts.
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This article shows how GENERATE_SERIES can be used with a few practical examples and a warning on parameters.
If you haven’t already heard, SQL Server 2022 introduced a new built-in system function called GREATEST. Simply put, it is to a set of columns, variables, expressions etc. what the MAX function is to a set of values (i.e., rows) of a single column or expression.
Learn about Amazon Athena, how it works, why you would use it, and some of the advantages of Athena over traditional relational databases.
Today, I want to blog about something I have only limited knowledge of … confidence. Okay, I understand what confidence is, and I have seen it before in the real world and not just in biographical movies. In fact, I have met quite a few highly confident people. In almost every case, it was immediately […]
This article shows how you can query different types of tables, based on certain criteria that may be important to you. A good list of basics for any database administrator that will help you find tables in your database.
Learn how you can use monitor your data warehouse load process with Python code and a structured process.
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Comments posted to this topic are about the item Faster Data Engineering with Python...
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I have this code in SQL Server 2022:
CREATE SCHEMA etl;
GO
CREATE TABLE etl.product
(
ProductID INT,
ProductName VARCHAR(100)
);
GO
INSERT etl.product
VALUES
(2, 'Bee AI Wearable');
GO
CREATE TABLE dbo.product
(
ProductID INT,
ProductName VARCHAR(100)
);
GO
INSERT dbo.product
VALUES
(1, 'Spiral College-ruled Notebook');
GO
CREATE OR ALTER PROCEDURE etl.GettheProduct
AS
BEGIN
exec('SELECT ProductName FROM product;')
END;
GO
exec etl.GettheProduct
When I execute this code as a user whose default schema is dbo and has rights to the tables and proc, what is returned? See possible answers