SQL Window Functions Series: LAG() and LEAD()
Dive deep into the powerful SQL window functions, LAG() and LEAD(). Explore their intricacies, discover real-world examples, and avoid common pitfalls.
2023-12-11
9,081 reads
Programming Language
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Model and Log Trend Reversals for Time Series Data in SQL Server
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Learning the SQL GROUP BY Clause
Learn about the various ways to use the GROUP BY command to summarize and rollup query results. We look at the basics with examples as well as using group by rollup, cube and grouping sets.
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What does SET NOCOUNT ON do?
When you’re working with T-SQL, you’ll often see SET NOCOUNT ON at the beginning of stored procedures and triggers. What SET NCOUNT ON does is prevent the “1 row affected” messages from being returned for every operation. Read Brent's blog to see him demo it by writing a stored procedure in the Stack Overflow database.
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SQL Server T-SQL CASE Statement Examples
This tip will teach you when and how you can use CASE in T-SQL statements with several code examples to give you a better understanding.
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Never, Ever, Ever Start T-SQL Comments with Two Dashes
In this article, Brent Ozar explains why you should avoid starting T-SQL comments with two dashes.
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Exploring Four Simple Time Series Forecasting Methods with R Examples
In this article we explore four simple time series forecasting methods using R: the Mean Method, the Naive Method, the Seasonal Naive method and the Simple Moving Average Method.
2021-04-02
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Which Table I
Comments posted to this topic are about the item Which Table I
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Question of the Day
Which Table I
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
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