---
title: "Discussion on \"6. Subqueries | View | Indexes | Performence tips\" | Hashnode"
description: "Discussion on \"6. Subqueries | View | Indexes | Performence tips\". A subquery (also called a nested query or inner query) is a query written inside another SQL query.The subquery runs first it gives value then outer query use that value\nSubquery in WHERE - (add some"
url: "https://hashnode.com/posts/6-subqueries-view-indexes-performence-tips/6a4ff976fd2c343fbd6451f4"
---

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# [6\. Subqueries | View | Indexes | Performence tips](https://sqlwithayush.hashnode.dev/6-subqueries-view-indexes-performence-tips?utm_source=hashnode&utm_medium=feed)

A subquery (also called a nested query or inner query) is a query written inside another SQL query.The subquery runs first it gives value then outer query use that value Subquery in WHERE - (add some

Jul 9 · 6 min read · sqlwithayush.hashnode.dev  
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[Ayush Rajput](https://hashnode.com/@ayuxsh)

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