\newsection
\section{SQL}
\input{parts/01_sql/00_intro.tex}
\input{parts/01_sql/01_ddl.tex}
\input{parts/01_sql/02_dml.tex}
\input{parts/01_sql/03_query-language/00_intro.tex}

\input{parts/01_sql/01_operations.tex}
% \input{parts/01_sql/}