2024-11-25
178 reads
math
Banker’s Rounding. What is it good for?
An in depth look at the implications of using Banker's Rounding.
2020-06-15
18,591 reads
Optimize Your SQL by Reformulating the Spec
As SQL developers, we tend to think of performance tuning in terms of crafting the best table indices, avoiding scalar and table valued functions, and analyzing query plans (among other things). But sometimes going back to the spec and applying some properties of elementary math can be the best way to begin to improve performance of SQL queries which implement mathematical formulas. This article is a case study of how I used this technique to optimize my SQL implementation of the Inverse Simpson Index.
2021-05-07 (first published: 2019-09-12)
5,391 reads
SQL for 8-year-old Math…But Be Careful of Implicit Type Conversion
How we can use SQL to solve a math problem published in The Guardian...but with a caution about implicit type conversion.
2015-07-14
7,502 reads
Integer left and right shift
3 functions that implement the left (<<), right (>>) and unsigned right (>>>) shift operators, commonly found in C-style languages.
2012-02-15 (first published: 2011-12-30)
8,118 reads
Blogs
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I had an idea for an animated view of a sales tool, and started...
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Next Monday, February 9, 2026, my one-day live online training SQL Server Query Tuning...
Monday Monitor Tips: SQL Auditing Preview
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One of the features we advocates have been advocating for is a better way...
Forums
SSRS shared dataset parameters not showing in expression builder
I am creating shared datasets that our executive staff can use for creating reports...
SSRS shared dataset parameters not showing in expression builder
I am creating shared datasets that our executive staff can use for creating reports...
Delta Lake: The Definitive Guide: Modern Data Lakehouse Architectures with Data Lakes
Comments posted to this topic are about the item Delta Lake: The Definitive Guide:...
Question of the Day
The Decoded Value
In SQL Server 2025, what is returned from this code:
DECLARE @message VARCHAR(50) = 'Hello SQL Server 2025!'; DECLARE @encoded VARCHAR(MAX); SET @encoded = BASE64_ENCODE(CAST(@message AS VARBINARY(1000))); SELECT BASE64_DECODE(@encoded)See possible answers