SQL Subquery | Complete Guide with Correlated Subquery |

Опубликовано: 19 Март 2025
на канале: Data with Baraa

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A comprehensive SQL subquery tutorial that provides a complete understanding of subqueries in SQL and their use cases. We will cover everything about how to use it in SELECT, FROM, JOIN, WHERE, IN, EXISTS, ANY, ALL, and more..
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⏱️ Timestamp
00:00 Intro
00:26 What is Subquery?
03:40 Why Subquery?
05:45 Categories of Subquery
07:52 Subquery Result Types
10:23 FROM Clause Subquery
21:15 How DB Executes Subquery
22:51 SELECT Clause Subquery
29:54 JOIN Clause Subquery
34:57 WHERE Clause Subquery
41:41 IN Operator Subquery
50:11 ANY, ALL Operators Subquery
56:25 Correlated Vs Non-Correlated Subqueries
01:07:11 Exists Operator Subquery
01:19:11 Subquery Summary

#sql #sqlserver #data #analytics
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