added footer fix, and hero image, sql tutorials

Author: sanjay-kv

docs/sql/SQL-basics/filtering-data.md

@@ -115,9 +115,13 @@ By following these best practices,
 :::
 
 ### 🔄 Checking Equality
-> We use the = operator to check if the two values are equal.
+
+  > We use the = operator to check if the two values are equal.
+
 > The values like text values are writtern between single quotes. 
+
 > We can also use the numeric properties , it dont need to put in the quotes. 
+
 > the = sign check if the two values are equal. 
 
     :::info

docs/sql/SQL-basics/the-inequality-operator.md

@@ -49,9 +49,10 @@ WHERE year <> 1;
 
 
 
+
 ### 📘 Practise Example
 
-> To query data from a table, use the FROM clause followed by the table's name.
+  > To query data from a table, use the FROM clause followed by the table's name.
 
 
 For example, consider a table named `Friends`. Below is how a simple table might look:
@@ -101,6 +102,7 @@ By following these best practices,
 :::
 
 ### 🔄 Comparison Operator. 
+
 > Sometimes, comparison with = and  are not felxible enoguh like when filtering by price of a grocery itesm 
 > We can use conditions to select items having a property les s than a threshold value like chocolate items with a price less than 2$
 > We can also use the numeric properties , it dont need to put in the quotes. 
@@ -144,7 +146,7 @@ WHERE pollution_index < 100;
 ## 🧹 Selecting Unique Values with numeric
 
 We want to code a condition to select records from the pollution table where the pollution_index is less than or equal to 122.
----
+
 
     :::info
 <Tabs>

docs/sql/intro-sql.md

@@ -172,6 +172,7 @@ Then company started developing database management system like SQL, Postgres,My
     </Tabs>
 
 
+
 1.  Advantages: **Platform Independent?**: Yes and No — It Depends. The core SQL language (based on ANSI/ISO standards) is platform-independent, meaning the basic syntax and concepts—like SELECT, INSERT, UPDATE, and DELETE—are the same across different database systems. ❌ But, SQL Implementations Are Not Fully Platform Independent:
 
 Different Database Management Systems (DBMS)—like MySQL, PostgreSQL, Oracle, SQL Server, and SQLite—extend SQL differently. They may:

docs/sql/setup-environment.md

@@ -20,28 +20,36 @@ description: In this tutorial, you will learn how to set up your development env
 There are different emulators available for SQL Queries, but as a beginner its always good to start with Installing MYSQL Server and Workbench in your system, it helps you to understand the overall process and industry settings. This MYSQL Workbench is called the IDE (Itegrated developement enviornment).
 We will guide you to setup the IDE in your system, and navigate further executing SQL queries and creating database in the IDE. 
 
-**1. Download the Installer:**: To install download the installer.
+### **1. Download the Installer:**: To install download the installer.
 
-    - Select the version compatible with your operating system (Windows, macOS, or Linux).
-    - Click Download and follow the installation instructions.
-    - https://dev.mysql.com/downloads/workbench/
+Click the link below to download MySQL Workbench:
 
-**2. Mac:**
-  - Server Install: http://bit.ly/2PU2IZU 
+👉 [MySQL Workbench Official Download Page](https://dev.mysql.com/downloads/workbench/)
 
-  - Workbench Install: http://bit.ly/2B2xiZ2
+- ✅ Choose your OS (Windows, macOS, or Linux)
+- ✅ Follow the installation instructions
 
-**3. Linux:**
-  - Server Install: http://bit.ly/2DijNpJ
+<iframe width="853" height="480" src="https://www.youtube.com/embed/u96rVINbAUI" title="How To Install MySQL (Server and Workbench)" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+
+---
 
-  - Workbench Install: http://bit.ly/2B153d8
+### 🍎 macOS Users  
+- 💾 [Server Installer](http://bit.ly/2PU2IZU)  
+- 💻 [Workbench Installer](http://bit.ly/2B2xiZ2)
+
+---
+
+### 🐧 Linux Users  
+- 💾 [Server Installer](http://bit.ly/2DijNpJ)  
+- 💻 [Workbench Installer](http://bit.ly/2B153d8)
+
+---
 
 
 ## Why Do You Need an IDE?
 
 This IDE helps you to execute and maintain the workflow of SQL, It acts as  a source code editor,  and a debugger. It basically help you to execute and debug any bugs for developer. Especially when comes to DBA (Database adminstration), managing huge dataset can be tiring here, it will help you with performance dashboard and quick improvement features. 
 
-<iframe width="853" height="480" src="https://www.youtube.com/embed/u96rVINbAUI" title="How To Install MySQL (Server and Workbench)" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
 
 ### Key Features to Look for in an IDE/Text Editor
 

docs/sql/table-transformation/_category_.json

@@ -0,0 +1,8 @@
+{
+    "label": "Table Transformation",
+    "position": 4,
+    "link": {
+      "type": "generated-index",
+      "description": "In this section, you will learn the basics of HTML, including how to create a simple webpage and how to use HTML tags to structure your content."
+    }
+  }