diff --git a/books/free-programming-books-pl.md b/books/free-programming-books-pl.md
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--- a/books/free-programming-books-pl.md
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@@ -188,6 +188,7 @@
 
 ### SQL
 
+* [Kurs SQL](https://dbadmin.net.pl/category/sql/) - Łukasz Bartnicki, (HTML) (:construction: *in process*)
 * [Kurs SQL](https://www.sqlpedia.pl/kurs-sql) - Jakub Kasprzak
 * [PL/SQL - podstawy (na stronie)](http://andrzejklusiewicz.blogspot.com/2010/11/kurs-oracle-plsql.html)
 * [SQL - podstawy (na stronie)](http://andrzejklusiewicz.blogspot.com/2010/11/kurs-oracle-sql.html)