I came across this question which wants no header rows on the last page. While trying to find a way for that I was wondering if it's possible to have different header rows on different pages automatically. An MWE is given with the tabularray package but it's not necessary to use this package for a solution. So, is it possible to have different header rows on different pages?
\documentclass{article}
\usepackage{xcolor}
\usepackage{tabularray}
\begin{document}
\begin{longtblr}[
caption = {A Long Long Long Long Long Long Long Table},
entry = {Short Caption},
label = {tblr:test},
]{
colspec = {XXX}, width = 0.85\linewidth,
rowhead = 2, rowfoot = 1,
row{odd} = {gray9}, row{even} = {brown9},
row{1-2} = {purple7}, row{Z} = {blue7},
}
\hline
Head & Head & Head \
\hline
Head & Head & Head \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Alpha & Beta & Gamma \
\hline
Epsilon & Zeta & Eta \
\hline
Iota & Kappa & Lambda \
\hline
Nu & Xi & Omicron \
\hline
Rho & Sigma & Tau \
\hline
Phi & Chi & Psi \
\hline
Foot & Foot & Foot \
\hline
\end{longtblr}
\end{document}


longtable– David Carlisle Dec 04 '21 at 15:59tblrconstruction, and so they cannot be changed mid-table. You could try to put this information in the table head instead, (as a minitblrin thecapconttemplate), but it would probably be difficult to align it with the main table. – Pieter van Oostrum Dec 04 '21 at 19:26