Learning Spark SQL String Functions with Explanations and Code Examples
Learn how to use different Spark SQL string functions to manipulate string data with explanations and code examples.
Learn how to use different Spark SQL string functions to manipulate string data with explanations and code examples.
Since the title might be considered a bit vague, I don’t want you to wade through the article to figure it out. I will spare you the typical clickbait introduction, with me telling you what a foreign key constraint is, and why it and all the other constraint types provided by relational engines are useful. […]
Today, Grant talks about reasons that companies don't upgrade.
You have dropped a column and wondering why you haven't recovered any space? Let's take a look.
In this article, I will discuss the history and thinking behind several types of logic that are typically associated with writing relational database code.
The PIVOT operator was added to the Transact-SQL language in SQL Server 2005. It allows you to turn your row data on its side, so it can be presented as column data. This is useful when you want take unique column values and have them displayed as column headings, where the column headings are associated with summarized values displayed below each column heading. In this article I will be exploring how to use the PIVOT operator.
Today, Grant Fritchey compares a disaster caused by a toilet to technical debt in IT.
Sometimes when you do GROUP BY, the order of the columns does matter. For example, these two SELECT queries produce different results:
Management is important to ensuring the success of a team. Steve talks about an anti-pattern that is often used by poor managers.
An updatable view in SQL Server is a view that allows modifications such as INSERT, UPDATE, or DELETE operations on the underlying tables through the view.
By Zikato
In SQL Server, using the KILL command to terminate a session results in an...
In today’s data-driven world, having the right tools to manage and process large datasets...
By Steve Jones
flichtish – adj. nervously aware how much of your self-image is based on untested...
I took a backup with the CHECKSUM option, which was successful and showed no...
Comments posted to this topic are about the item Realities of Predictive Analysis
Just came across something weird. Was wondering if anyone else has ever seen this....
I have a table in SQL Server 2022 that is an XML data type. I have an index on this column and want to create statistics using CREATE STATISTICS for some of the data in the column. What should I do?
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