Common SQL Anti-Patterns That Impact Performance and Maintainability
By
zekrom
Properly proved. Has structure, has flavour, has a point.
Summary
This article discusses common SQL anti-patterns that negatively impact query performance and maintainability in enterprise software environments. It focuses on issues like large CASE WHEN statements for status code translations, which can make queries difficult to maintain and erode trust in data systems. The content provides practical insights for developers working with SQL in data pipelines and enterprise applications.
Key quotes
· 3 pulledThese issues can compound, causing erosion in trust in data, and slower query development in general.
When working with larger enterprise software, it is common to have large CASE WHEN statements translating application status codes into plain English.
Now imagine there are hundreds of status codes that need to be categorized.
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