[Tex/LaTex] Multirow and lines – how to draw line going through selected columns

Question

I was wondering if it is possible to draw line which goes through some columns in table(not all columns). I have a table which looks like that

\begin{longtable}{|c|c|c|c|c|c|c|c|c|c|c|c|}
\caption{some text }
\label{tab:artificialShapes}
\\\hline
\multirow{2}{*}{Shape} & \multirow{2}{*}{$C^{*}$} & \multirow{2}{*}{$C_{0}$} &\multirow{2}{*}{$N$} & \multicolumn{4}{|c|}{\textbf{Noisless data}} & \multicolumn{4}{|c|}{\textbf{Noisy data}} \\
\hline
& & & & $J_{b}$ & $J_{a}$ & time[s] & $\rho$  & $J_{b}$ & $J_{a}$ & time[s] & $\rho$ \\ \hline

\end{longtable}

The problem is that text which is placed in multirow command is crossed by line. Is it possible to prevent a line from going through all columns ?

Answer 1

instead of the second \hline use \cline{5-12}

And by the way: you can write \begin{longtable}{|*{12}{c|}} for your tabular definition