Signed-off-by: Chris Sharp <csharp@georgialibraries.org>
Signed-off-by: Lynn Floyd <lfloyd1@library.in.gov>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>
--- /dev/null
+Reports Subtotals
+^^^^^^^^^^^^^^^^^
+Reports now allow group subtotals and grand totals. By checking the
+new "Calculate grouping subtotals" checkbox under "Output Options",
+a new unlabeled row or column is created with the subtotals for each
+grouping and an unlabeled grand total row or column.
+
+This takes advantage of PostreSQL's built-in ROLLUP feature. See the
+PostgreSQL documentation for details:
+
+https://www.postgresql.org/docs/9.6/queries-table-expressions.html#QUERIES-GROUPING-SETS