---
title: "Discussion on \"MySQL & PostgreSQL Performance: The Hidden Cost of Using Functions on Indexed Columns\" | Hashnode"
description: "Discussion on \"MySQL & PostgreSQL Performance: The Hidden Cost of Using Functions on Indexed Columns\". How Using Functions on Indexed Columns Affects MySQL & PostgreSQL Performance"
url: "https://hashnode.com/posts/mysql-and-postgresql-performance-the-hidden-cost-of-using-functions-on-indexed-columns/68bb20b31496448bffa25feb"
---

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# [MySQL & PostgreSQL Performance: The Hidden Cost of Using Functions on Indexed Columns](https://vishad.hashnode.dev/mysql-and-postgresql-performance-the-hidden-cost-of-using-functions-on-indexed-columns?utm_source=hashnode&utm_medium=feed)

How Using Functions on Indexed Columns Affects MySQL & PostgreSQL Performance

Sep 5, 2025 · 3 min read · vishad.hashnode.dev  
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## Written by

[Vishad Patel](https://hashnode.com/@vishadtech09)

@vishadtech09 · Gujarat, India

  
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