What is Null - NVL, NVL2, Coalesce | Snowflake Null Handling Functions
Topic 02, Part 08 - Null Values
NULL Values in SQL
L2.6 | NULL value in DBMS | NULL | NULL value | What is null | NULL value in relational database
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Last Updated: October 19, 2026
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Summary
This video is an introduction to Why does 'contact_id = 8 OR contact_id ≠ 8' drop a row? On the Module 8 dataset (m08_types plus an events table) and real ... Practise this topic with SQL test papers, free to start: pytesthub.com Lecture 1 of 8 in SQL - Advanced, from Toppers ... Predict exactly when NOT IN returns nothing. On a real PostgreSQL 16 database the same NOT IN query works for Mouse buyers ... On real PostgreSQL 16 we count rows with COUNT(*), non- praveenkumarbommisetty.graphy.com/s/store What is See full Playlist at youtube.com/playlist?list=PLzDhRwQSytx1TJ2Qxbk6CBEQtdN-oKYjD 00:00 Introduction 00:39 ...