splitting/breaking a long table from an input file, latex

Question

I am input a file in my main latex file but the table (inputfiles contains a table) is too long to be on apage. How can I break it on two or main pages.

\usepackage{longtable} %%


\IfFileExists{file}{%
\begin{table}
\begin{center}
\caption{Grenzwertverletzung [st]}
\begin{tabular}{ll}
st&  \input{file} \\
\end{tabular}
\end{center}
\end{table}
}{}