is an integer vector for month, day,
hour, minute subsetting of <code>datetime</code> column when querying on the SQL
database. If <code>NULL</code>, no subsetting is performed on those components. All
possible <code>month</code>, <code>day</code>, <code>hour</code> and <code>minute</code> can be obtained using
<code>$read_table("Time")</code>.  Default: <code>NULL</code>.</p></li>
<li><p><code>interval</code>: An integer vector used to specify which interval length of
report to extract. If <code>NULL</code