change Linespread in longtable and table

Question

In my document i am using a \linespread{1.5} for the whole document, but I would like to have a \linespread{1} for tables and long tables. How can I change it?

Answer 1

The following shows different values of \baselinestretch applying to text and longtables within the same page:

\documentclass{article}
\usepackage{longtable}

\def\a{One two three four five six. }
\def\b{\a\a\par Red green blue. \a\a\a\par Yellow black \a\a\a\a}

\begin{document}

111! \b

\renewcommand\baselinestretch{2.5}\selectfont

222! \b

\begin{longtable}{|l|c|r|}
\hline
aaa aa aa aaa a a a&1&bbbbbbbbbbbbbb\\
aaaaaaaaaaaaaaa&1&bbbb\\
aaaaaaaaaaa&1234567890&bbbbb b b b b bbbbbbbbbbb\\
\hline
\end{longtable}

\b

\renewcommand\baselinestretch{1}\selectfont

111!

\begin{longtable}{|l|c|r|}
\hline
aaa aa aa aaa a a a&1&bbbbbbbbbbbbbb\\
aaaaaaaaaaaaaaa&1&bbbb\\
aaaaaaaaaaa&1234567890&bbbbb b b b b bbbbbbbbbbb\\
\hline
\end{longtable}

\renewcommand\baselinestretch{2.5}\selectfont

222!

\b\b\b

\end{document}