Add sqlfacts.com

Author: ktaranov

README.md

@@ -485,6 +485,7 @@ Useful links, scripts, tools and best practice for Microsoft SQL Server Database
  - [SQL cheat sheet for PostgreSQL and Oracle](https://www.pcwdld.com/sql-cheat-sheet) (by Marc Wilson)
  - [Bllitz Excel UI](https://1pro.bi/blitz-excel-ui/) (by Alex)
  - [Industry-specific Data Models - cover Subject Areas and are used to create Enterprise Data Models](http://www.databaseanswers.org/data_models/)
+ - [SQLFacts - A powerful suite of FREE TSQL tools for SQL Server database professionals](https://www.sqlfacts.com)
 
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