---
title: "Dina Alaa (@dinaalaaahmed) | Hashnode"
description: "Senior Software Engineering Student at Cairo University. Read the latest articles by Dina Alaa on Hashnode."
url: "https://hashnode.com/@dinaalaaahmed"
---

@dinaalaaahmed

# Dina Alaa

@dinaalaaahmed · Egypt · Joined February 2022

Senior Software Engineering Student at Cairo University

### [How to use Comparison Query Operators in MongoDB inside aggregation when joining multiple tables?](https://dinaalaaahmed.hashnode.dev/how-to-use-comparison-query-operators-in-mongodb-inside-aggregation-when-joining-multiple-tables?utm_source=hashnode&utm_medium=feed)

using pipeline for join and comparisons between two data fields in MongoDB.

2 min read · [dinaalaaahmed.hashnode.dev](https://dinaalaaahmed.hashnode.dev/how-to-use-comparison-query-operators-in-mongodb-inside-aggregation-when-joining-multiple-tables?utm_source=hashnode&utm_medium=feed)

[Mar 12, 2022](https://hashnode.com/posts/how-to-use-comparison-query-operators-in-mongodb-inside-aggregation-when-joining-multiple-tables/622d0db6df08b9b823417f82)