💡 SQL Interview / Real-Time Question: 👉 How do you delete duplicate rows from a table while keeping only one copy? Here’s the clean SQL solution 👇 ✅ Method 1: Using ROW_NUMBER() (Best & Recommended) (Works in SQL Server, PostgreSQL, Oracle, MySQL 8 ) WITH duplicates AS ( SELECT *, ROW_NUMBER() OVER ( PARTITION BY column1, column2, column3 ORDER BY id ) AS rn FROM table_name ) DELETE FROM duplicates WHERE rn > 1; 🎯 Explanation: - PARTITION BY → identifies duplicates - ROW_NUMBER() → assigns a
1:05
FacebookAshok IT
💡 SQL Interview / Real-Time Question: 👉 How do you delete duplicate rows from a table while keeping only one copy? Here’s the clean SQL solution 👇 ✅ Method 1: Using
Ashok IT. Ashok IT · Original audio. 💡 SQL Interview / Real-Time Question: 👉 How do you delete duplicate rows from a table while keeping only one copy? Here’s the clean SQL solution 👇 Method 1: Using ROW_NUMBER() (Best & Recommended) (Works in SQL Server, PostgreSQL, Oracle, MySQL 8 ) WITH duplicates AS ( SELECT *, ROW_NUMBER() OVER ...
239 views2 weeks ago
SQL Table Basics
SQL Tutorial for Beginners
44:57
SQL Tutorial for Beginners
YouTubeKevin Stratvert
2.8M viewsMar 22, 2022
SQL Tutorial for Beginners (Complete Course using MySQL)
3:57:54
SQL Tutorial for Beginners (Complete Course using MySQL)
YouTubeCodeWithHarry
1.6M views5 months ago
Learn 12 Basic SQL Concepts in 15 Minutes (project files included!)
16:48
Learn 12 Basic SQL Concepts in 15 Minutes (project files included!)
YouTubeMaven Analytics
421.3K viewsSep 19, 2024
Top videos
💡 SQL Interview Question: 👉 How do you display employees along with their managers? This is one of the most asked SQL questions to test self-join concepts. Here’s the clean SQL query 👇 SELECT e.employee_name AS employee, m.employee_name AS manager FROM employees e LEFT JOIN employees m ON e.manager_id = m.employee_id; 🎯 Explanation: - The employees table is joined with itself - e represents employee - m represents manager - manager_id in employee row maps to manager’s employee_id - LEFT JOIN
1:00
💡 SQL Interview Question: 👉 How do you display employees along with their managers? This is one of the most asked SQL questions to test self-join concepts. Here’s the clean SQL query 👇 SELECT e.employee_name AS employee, m.employee_name AS manager FROM employees e LEFT JOIN employees m ON e.manager_id = m.employee_id; 🎯 Explanation: - The employees table is joined with itself - e represents employee - m represents manager - manager_id in employee row maps to manager’s employee_id - LEFT JOIN
FacebookAshok IT
24 views1 week ago
Learn SQL: Join multiple tables
Learn SQL: Join multiple tables
sqlshack.com
168 viewsJan 27, 2020
A SQL join on multiple tables: overview and implementation
A SQL join on multiple tables: overview and implementation
sqlshack.com
168 viewsJan 28, 2020
SQL Table Constraints
SQL Tutorial - Create Table with Constraints
20:35
SQL Tutorial - Create Table with Constraints
YouTubeBeardedDev
16.4K viewsMay 28, 2017
5. Constraints in SQL | SQL Tutorial
5:59
5. Constraints in SQL | SQL Tutorial
YouTubelearn by doing it
2.4K viewsOct 16, 2024
Constraints in SQL (Example Queries)
9:50
Constraints in SQL (Example Queries)
YouTubeNeso Academy
24.4K views10 months ago
💡 SQL Interview Question: 👉 How do you display employees along with their managers? This is one of the most asked SQL questions to test self-join concepts. Here’s the clean SQL query 👇 SELECT e.employee_name AS employee, m.employee_name AS manager FROM employees e LEFT JOIN employees m ON e.manager_id = m.employee_id; 🎯 Explanation: - The employees table is joined with itself - e represents employee - m represents manager - manager_id in employee row maps to manager’s employee_id - LEFT JOIN
1:00
💡 SQL Interview Question: 👉 How do you display employees along with …
24 views1 week ago
FacebookAshok IT
Learn SQL: Join multiple tables
Learn SQL: Join multiple tables
168 viewsJan 27, 2020
sqlshack.com
A SQL join on multiple tables: overview and implementation
A SQL join on multiple tables: overview and implementation
168 viewsJan 28, 2020
sqlshack.com
SQL Join on Multiple Columns Examples
SQL Join on Multiple Columns Examples
Dec 9, 2021
mssqltips.com
SQL Joins - The Ultimate Guide - Essential SQL
3:28
SQL Joins - The Ultimate Guide - Essential SQL
Nov 8, 2021
essentialsql.com
SQL Joins (Inner, Left, Right and Full Join) - GeeksforGeeks
22:55
SQL Joins (Inner, Left, Right and Full Join) - GeeksforGeeks
Oct 15, 2019
geeksforgeeks.org
SQL JOINs for Beginners
SQL JOINs for Beginners
Oct 25, 2016
learnsql.com
How to Learn SQL JOINs
Jun 2, 2020
learnsql.com
SQL multiple joins for beginners with examples
168 viewsOct 16, 2019
sqlshack.com
SQL Merge Two Tables: A Guide | Built In
Jul 10, 2024
builtin.com
4:02
Querying Multiple Tables with JOIN
Apr 20, 2016
teamtreehouse.com
20:13
Stop Struggling with SQL! Creating Tables & Joins Explained With Ea…
4 weeks ago
YouTubeZeloft Academy
5:59
SQL Full Outer Join Using UNION For MySQL
15.6K viewsJun 3, 2022
YouTubeAnkit Bansal
SQL: Combining Data from Multiple Tables | Joins & More!
40 views9 months ago
YouTubeSmart Data Learners
6:47
Join multiple tables using stored procedure in sql server sql server …
13K viewsApr 8, 2019
YouTubeImprove Yourself
How to Join Two SQL Tables Based on a Column and Retrieve Values f…
8 months ago
YouTubevlogize
7:39
Tableau - Cross Database Joins
225.8K viewsJan 23, 2018
YouTubeTutorialsPoint
14:13
SQL Three Table Join Examples
80.9K viewsApr 18, 2014
YouTubeBrian Finnegan
5:53
SQL INNER JOIN explained
121.2K viewsAug 28, 2014
YouTubeNiels Henrik Juul Hansen
17:43
Joins in sql server - Part 12
1.1M viewsAug 18, 2012
YouTubekudvenkat
9:09
Self Join in SQL
58.3K viewsMay 22, 2021
YouTubeDatabase Star
7:54
SQL Tutorial - 29: SQL JOINS
367.6K viewsJan 6, 2014
YouTubeThe Bad Tutorials
11:32
SQL Joins Examples |¦| Joins in SQL |¦| SQL Tutorial
288.3K viewsMar 27, 2019
YouTubeSocratica
7:16
Merge Join Internals in SQL Server
25.2K viewsDec 18, 2018
YouTubeBert Wagner
10:26
SQL Joins Explained |¦| Joins in SQL |¦| SQL Tutorial
877.2K viewsMar 25, 2019
YouTubeSocratica
16:48
SQL Server Queries Part 6 - JOINS (Inner and Outer Joins)
217.8K viewsMay 23, 2012
YouTubeWiseOwlTutorials
30:08
Joins in Oracle (SQL) Explained in detail with practical examples
62.8K viewsNov 19, 2017
YouTubeTech Coach
4:06
SQL Join 3 Tables: How-To with Example
134.3K viewsAug 25, 2020
YouTubeDatabase Star
11:08
The different types of JOINs in Microsoft SQL Server - INNER, LE…
23K viewsMay 19, 2021
YouTubeSQL Server 101
See more videos
Static thumbnail place holder