Packing intervals is a classic SQL task that involves packing groups of intersecting intervals to their respective continuous intervals. In mathematics, an interval is the subset of all values of a given type, e.g., integer numbers, between some low value and some high value.
Learn how a C# script can easily load data from Excel into SQL Server.
Today Steve wonders if the technology for storage and data transfers has superseded the need for portable drives.
Aggregation is a widely used way to summarize the content of a database. It is usually expressed with GROUP BY clause or just using aggregate functions (like COUNT or SUM). When the database engine executes a query with aggregations, it produces individual rows need to compute the required output and then performs the aggregation as (almost) last step. We discuss in this article how to re-write a query manually so that the order of operations will be different and when it can be beneficial.
I really enjoy playing with radios [ed: we know, you won't shut up about it]. Something as simple as checking in to a local net (basically saying hi to a bunch of people on the radio) is fun. However, there's so much more to it. In the last few weeks I've been testing a new […]
A cloud version of Aurora MySQL has added support for the buffer pool to survive restarts of the database engine. Steve thinks that's an interesting technology, which could be helpful.
Learn how you can handle dimensional modeling in a data warehouse when your data uses different categorization for ages.
Nearly a decade ago, I wrote a post called “Bad habits : Counting rows the hard way.” In that post, I talked about how we can use SQL Server’s metadata to instantly retrieve the row count for a table.
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Learn about the benefits of mixed extent allocation in SQL Server 2016, along with how you can check this setting or enable it in your database.
The first version of my accounting assistant could not find a single purchase of...
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By Steve Jones
I’m really excited about some growth in Flyway support. I’ve been asking about this...
Comments posted to this topic are about the item Pay for Performance, which is...
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I have a table, dbo.MasterBrands, with this data:
BrandID OfficialName 1 Samsung 2 Apple 3 Microsoft 4 Adidas 5 Coca-ColaI run this query. What is returned for Coca-Cola?
SELECT CHOOSE(BrandID, 'Conglomerate', 'Tech and Design', 'Desktop', 'Apparel') FROM dbo.MasterBrands;See possible answers