From 230385f6be84ede3bdd27a5b1aeb5f4e5fe1f99f Mon Sep 17 00:00:00 2001
From: GowthamRaj K <43011442+gowthamrajk@users.noreply.github.com>
Date: Thu, 29 Jul 2021 08:16:01 +0530
Subject: [PATCH] Update README.md

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index ca404e8..380aa65 100644
--- a/README.md
+++ b/README.md
@@ -648,3 +648,9 @@ There are different types of joins available in SQL −
 
 # SQL - NULL Values ⛔
 
+- SQL NULL is the term used to represent a missing value. 
+- A NULL value in a table is a value in a field that appears to be blank.
+- A field with a NULL value is a field with no value. 
+- It is very important to understand that a NULL value is different than a zero value or a field that contains spaces.
+
+