Many people have published high performance, read-less, Inline Table Valued functions that use Itzik Ben-Gan's wonderful "Virtual Numbers Table" to replace WHILE loops and other forms of RBAR. This one is Jeff Moden's version.
2019-08-13 (first published: 2019-08-04)
7,715 reads
A fast table valued function to generate a list of prime numbers within the range specified by the parameters.
2017-04-12 (first published: 2017-03-30)
420 reads
An article about tally tables, N-Grams and the fastest character-level N-Grams function available today for SQL Server.
2018-11-22 (first published: 2016-06-23)
15,903 reads
2016-04-01 (first published: 2016-03-23)
859 reads
2013-06-13 (first published: 2013-05-30)
3,055 reads
The Tally Table has proven to be a simple and elegant method for avoiding many varieties of RBAR. Unfortunately, one of its more common uses, that of a CSV splitter, has a well-known and serious performance problem. MVP Jeff Moden shows us what that problem is and how to correct it. (UPDATED with additional info and attachments on 5/12/2011).
2012-12-28 (first published: 2011-05-02)
141,174 reads
In part II of this series, Sioban Krzywicki shows us another way Tally Tables have helped solve problems - Text Parsing.
2010-08-03
9,414 reads
In the first part of a series on Tally Tables, Sioban Krzywicki shows how a Tally Table has helped out with fiscal year calculations.
2010-08-02
16,464 reads
By Brian Kelley
If you want to learn better, pause more in your learning to intentionally review.
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If you’ve used Azure SQL Managed Instance General Purpose, you know the drill: to...
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Ramblings of a retired data architect Let me start by saying that I have...
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
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