表格：如何控制左右单元格边距？

Question

尽管搜索了论坛，我仍然无法弄清楚如何控制内部单元格的左边距和右边距。在下面的示例中，我如何调整（例如减少）“L-text”单元格的左边距以及“R-text”单元格的右边距？请注意，需要定义列宽。谢谢，Jorge。

例子：

\documentclass[margin=3mm]{standalone}
\usepackage{array}
\usepackage{booktabs}
\aboverulesep=0ex
\belowrulesep=0ex

\newlength{\ColWidthNormal}         \setlength{\ColWidthNormal}{1.50cm}
\newlength{\ColWidthRowHeader}      \setlength{\ColWidthRowHeader}{1.50cm}

\newlength{\RuleOffsetLeft} \setlength{\RuleOffsetLeft}{-0.4pt}
\newlength{\RuleThicknessNormal} \setlength{\RuleThicknessNormal}{1.0pt}

\newcolumntype{C}{>{\centering\arraybackslash\leavevmode}p{\ColWidthNormal}}
\newcolumntype{R}{>{\raggedleft\arraybackslash}p{\ColWidthNormal}}
\newcolumntype{L}{>{\raggedright\arraybackslash}p{\ColWidthRowHeader}}

\begin{document}
\begin{tabular}{
    |L|R|R|
}
\cmidrule[\RuleThicknessNormal](l{\RuleOffsetLeft}){2-3}
\multicolumn{1}{c|}{}& \multicolumn{1}{c|}{C-text}& \multicolumn{1}{c|}{C-text} \\
\midrule[\RuleThicknessNormal]
L-text& R-text& R-text \\
\midrule[\RuleThicknessNormal]
L-text& R-text& R-text \\
\midrule[\RuleThicknessNormal]
\end{tabular}
\end{document} 

输出：

更新：解决方案\hspace在最小列宽以下不起作用！有什么解决方法吗？

代码：

\documentclass[margin=3mm]{standalone}
\usepackage{array}
\usepackage{booktabs}
\aboverulesep=0ex
\belowrulesep=0ex

\newlength{\ColWidthNormal}         \setlength{\ColWidthNormal}{1.50cm}
%\newlength{\ColWidthRowHeader}         \setlength{\ColWidthRowHeader}{1.50cm}
\newlength{\ColWidthRowHeader}      \setlength{\ColWidthRowHeader}{1.00cm}

\newlength{\RuleOffsetLeft} \setlength{\RuleOffsetLeft}{-0.4pt}
\newlength{\RuleThicknessNormal} \setlength{\RuleThicknessNormal}{1.0pt}

\newcolumntype{C}{>{\centering\arraybackslash\leavevmode}p{\ColWidthNormal}}
\newcolumntype{R}{>{\raggedleft\arraybackslash}p{\ColWidthNormal}}
\newcolumntype{L}{>{\raggedright\arraybackslash}p{\ColWidthRowHeader}}

\begin{document}
\setlength{\tabcolsep}{3pt}
\begin{tabular}{
    |@{\hspace{0pt}}L|
    R@{\hspace{-3pt}}|
    R@{\hspace{-12pt}}|
}
\cmidrule[\RuleThicknessNormal](l{\RuleOffsetLeft}){2-3}
\multicolumn{1}{c|}{}& \multicolumn{1}{c|}{My C-text}& \multicolumn{1}{c|}{My C-text} \\
\midrule[\RuleThicknessNormal]
L-text& R-text& R-text \\
\midrule[\RuleThicknessNormal]
L-text& R-text& R-text \\
\midrule[\RuleThicknessNormal]
\end{tabular}
\end{document} 

输出：

Answer 1

这是一个解决方案@{\hspace{some length}}：

\documentclass[margin=3mm]{standalone}

\usepackage{array}
\usepackage{booktabs}
\aboverulesep=0ex
\belowrulesep=0ex

\newlength{\ColWidthNormal} \setlength{\ColWidthNormal}{1.50cm}
\newlength{\ColWidthRowHeader} \setlength{\ColWidthRowHeader}{1.50cm}

\newlength{\RuleOffsetLeft} \setlength{\RuleOffsetLeft}{-0.4pt}
\newlength{\RuleThicknessNormal} \setlength{\RuleThicknessNormal}{1.0pt}

\newcolumntype{C}{>{\centering\arraybackslash\leavevmode}p{\ColWidthNormal}}
\newcolumntype{R}{>{\raggedleft\arraybackslash}p{\ColWidthNormal}}
\newcolumntype{L}{>{\raggedright\arraybackslash}p{\ColWidthRowHeader}}

\begin{document}

\begin{tabular}{%
    |@{\hspace{0pt}}L|R@{\hspace{1pt}}|R@{\hspace{2pt}}|
}
\cmidrule[\RuleThicknessNormal](l{\RuleOffsetLeft}){2-3}
\multicolumn{1}{c|}{}& \multicolumn{1}{c|}{C-text}& \multicolumn{1}{c|}{C-text} \\
\midrule[\RuleThicknessNormal]
L-text& R-text& R-text \\
\midrule[\RuleThicknessNormal]
L-text& R-text& R-text \\
\midrule[\RuleThicknessNormal]
\end{tabular}

\end{document}