Introduction to SQL Server's sqlcmd utility

SQL Commands Cheat Sheet - Learn SQL Commands in One Go

Overview of Microsoft SQL Server Management Studio (SSMS)

Using SQL Server sqlcmd scripting variables

Overview of the SQLCMD utility in SQL Server

Execute SQL Server Script Files with the sqlcmd Utility

SQL Variable Examples in Stored Procedures, Functions, Scripts, SQLCMD

Securely Working with Invoke-SqlCmd