SE</code>, aggregated values will ignore any
time portion. Default = <code>TRUE</code></p></dd>


<dt id="arg-format">format<a class="anchor" aria-label="anchor" href="#arg-format"></a></dt>
<dd><p>Where datetime values are not in the format <code>YYYY-MM-DD</code> or
<code>YYYY-MM-DD HH:MM:SS</code>, an alternative format can be specified at the per
field level, using <code><a href="https://readr.tidyverse.org/reference/parse_datetime.html" class="external-link">readr::col_datetime()</a></code> format spec