 for the most common dataset structures, but it is not foolproof. Therefore, we always advise to check the columns that are being merged by setting <code>verbose = TRUE</code> and reading the printout.
 Moreover, users should be aware that this automatic detection process can increase the overall merging time considerably. This can be especially long for tables containing many columns or when a large number of tables is being merged.</p>
<p><strong>Formatting of <code>by</code> argument</strong>
If an argum