siunitx S column does not align numbers without dot

Question

I have a table that uses the S column type provided by siunitx. Unfortunately, if a number does not have a . it is not aligned properly. Yes, i could write number. but then the table will list the entry as number.0 instead of just number.

\documentclass{article}
\usepackage{booktabs}
\usepackage{siunitx}
\begin{document}

\begin{table} \centering
{\small
\begin{tabular}{SS}
\toprule
{x}   &{x}   \\
\midrule
123 & 23.0e-5  \\
123.0 & 23\\
0.23 & 1.423  \\
0.23 & 1  \\
\bottomrule
\end{tabular}}
\end{table}

\end{document}

Answer 1

Here's a solution that specifies the table-format for each column; note that I also grouped {23e-5}

\documentclass{article}
\usepackage{booktabs}
\usepackage{siunitx}
\begin{document}

\begin{table} \centering
{\small
\begin{tabular}{S[table-format=3.2]S[table-format=2.3]}
\toprule
{x}   &{x}   \\
\midrule
123 & {23.0e-5}  \\
123.0 & 23\\
0.23 & 1.423  \\
0.23 & 1  \\
\bottomrule
\end{tabular}}
\end{table}

\end{document}