Unlock the power of SQL's NTILE function with our latest deep-dive article. Learn to segment your data effectively into quantiles for more nuanced analysis, discover common pitfalls and their solutions, and optimize your queries for peak performance.
2024-02-03 (first published: 2024-01-03)
4,739 reads
Welcome to the fascinating world of SQL window functions! Today, we'll explore in detail: RANK() and DENSE_RANK().
2023-11-20 (first published: 2023-11-15)
11,365 reads
PSPO (Parameter Sensitive Plan Optimization) is a SQL Server feature that improves query performance by accepting varied data sizes based on the runtime parameter value(s) specified by the customer. It deals with the situation in which a single cached plan for a parameterized query isn't the best option for all potential incoming parameter values. Non-uniform data distributions exhibit this phenomenon. When using PSPO, SQL Server keeps several execution plans for a single query, each one customized for a particular parameter value. With the help of this feature, numerous execution plans for a parameterized query are generated, each of which is tailored for a certain range of parameter values.
2023-07-21
3,926 reads
This article shows how you can find which objects in your database might not be valid after schema changes.
2023-03-13
21,570 reads
Learn to calculate Start / First of Week, End of Week, Start of Next Week, Year, Quarter, and Month of the week, Week Numbers and more in T-SQL (Jeff Moden)
2022-07-13
31,932 reads
2019-10-28
7,143 reads
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)
7,428 reads
A CTE is a temporary result set defined by a simple query, and is used within the execution scope of a single INSERT, UPDATE, DELETE, or SELECT statement. In this article we will explore how to define and use CTE's.
2024-04-03 (first published: 2015-03-18)
6,356 reads
This creates a Tally or Numbers table which is frequently used to replace loops in code and is much faster than most loops.
2011-11-28 (first published: 2008-03-07)
6,691 reads
By Steve Jones
It’s been a week since I flew home from London and Redgate to begin...
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By Rohit Garg
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Hi everyone I have two db - one is test and other is archive. ...
Comments posted to this topic are about the item The Long Weekend
Dear All, Good Day. I have a requirement to implement de-duplication on customer data...
The film independence day was released in 1996. Which of these queries returns that year is run today?
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