You have code duplication :) I'd do the same in this way:

<!-- in template.tmpl -->

<TMPL_LOOP TABLE1_DATA>
<TMPL_INCLUDE table.tmpl>
</TMPL_LOOP>

<TMPL_LOOP TABLE2_DATA>
<TMPL_INCLUDE table.tmpl>
</TMPL_LOOP>
[download]

<!-- in table.tmpl -->

<TR><TD><TMPL_VAR ESCAPE=HTML COLUMN1></TD></TR>
<!-- yada yada yada -->
[download]