Combinations, permutations, and derangements
Joe Celko explains how several mathematical concepts, combinations, permutations, and derangements, relate to databases.
2022-06-01
Articles
Managing Database Code Quality in a Flyway Development
In this article, I'll discuss the most important quality metrics for a database development, and then practical ways to ensure that a Flyway-managed database is designed and implemented to a high enough standard that it is reliable to use.
2022-06-01
Using tsqlt Tests to Practice Queries
In this short article, see how a unit test can be easily written in tsqlt, and how this can help us refactor or build better code.
2022-05-30 (first published: 2019-09-24)
16,118 reads
Getting Started with Flyway and any RDBMS
How to get started with Flyway, as simply as possible, using PowerShell. This article provides a practice set of Flyway migration scripts that will build the original pubs database on either SQL Server, PostgreSQL, MySQL, MariaDB or SQLite and then migrate it from version to version, making a series of improvements to its schema design.
2022-05-30
Search all String Columns in all SQL Server Tables or Views
In this article we look at T-SQL script you can use to search for a string in every table and view in every database or in a specific database.
2022-05-30
Loading Data using R and PowerBI
I'm not a fan of R visuals in PowerBI. I recently learned I can use R to load data and native PowerBI visuals to display the data. Here's how.
2022-05-27 (first published: 2017-10-16)
7,043 reads
Memory profiling in Python with tracemalloc
You can find memory leaks in Python code with tracemalloc. In this article, Priyanka Nawalramka demonstrates how to use tracemalloc to find the leaks.
2022-05-27
Simple Reporting with Flyway and Database Models
If you can generate a file-based (JSON) model for each new version of a database, produced by a Flyway migration, then you have an easy way to run simple reports to help you search, list, and understand the structure of these databases. I'll show how to produce the models using PowerShell and then run some queries against them to generate the reports.
2022-05-27
Oracle optimizer removing or coalescing subqueries
The Oracle optimizer often changes the query to get better performance. In this article, Jonathan Lewis explains two more optimizations involving subqueries.
2022-05-25
Sharing SQL Prompt Code Snippets and Styles via the Redgate Platform
SQL Prompt users can now share formatting style or code snippets in designated Team spaces on the Redgate Platform. Louis Davidson explains how it works.
2022-05-25
Blogs
A New Word: Gnossienne
By Steve Jones
gnossienne– n. the awareness that someone you’ve known for years still has a private...
Exploring DiskANN: Part I: Understanding the Algorithm before the disk
How I used AI for this postChatGPT to generate images based on info specifically...
Learning Tool – Deepstash
By Brian Kelley
A few months ago I started using Deepstash. Deepstash breaks books into the key...
Forums
When the Token Meter is Zero
Comments posted to this topic are about the item When the Token Meter is...
Understanding Temp Tables and Table Variables in SQL Server
Comments posted to this topic are about the item Understanding Temp Tables and Table...
The Data API Builder MCP Server Tools
Comments posted to this topic are about the item The Data API Builder MCP...
Question of the Day
The Data API Builder MCP Server Tools
The Data API Builder MCP Server, v2.x, includes a number of tools. What actions can these tools perform in your database?
See possible answers