SQL and Databases - A Full Course for Beginners

SQL Queries in SQL Server – a beginner’s guide

SQL Commands: The Complete List (w/ Examples) – Dataquest

SQL UPDATE Statement (Transact SQL) - Essential SQL

SQL ALTER TABLE to Add, Delete and Change Columns in a Table

Alter Table Modify Column ONLINE Issues in SQL Server

SQL Server query execution plans – Examples with the SELECT statement

SQL Query Examples

How to write Complex SQL Queries? Practice with examples | Must do for Interviews !