chore: calculate total row month-wise in sales analytics
diff --git a/erpnext/selling/report/sales_analytics/sales_analytics.json b/erpnext/selling/report/sales_analytics/sales_analytics.json
index cbc5999..bf9edd6 100644
--- a/erpnext/selling/report/sales_analytics/sales_analytics.json
+++ b/erpnext/selling/report/sales_analytics/sales_analytics.json
@@ -1,5 +1,5 @@
 {
- "add_total_row": 1,
+ "add_total_row": 0,
  "creation": "2018-09-21 12:46:29.451048",
  "disable_prepared_report": 0,
  "disabled": 0,
@@ -7,7 +7,7 @@
  "doctype": "Report",
  "idx": 0,
  "is_standard": "Yes",
- "modified": "2020-04-30 16:27:53.112907",
+ "modified": "2020-04-30 19:49:02.303320",
  "modified_by": "Administrator",
  "module": "Selling",
  "name": "Sales Analytics",
diff --git a/erpnext/selling/report/sales_analytics/sales_analytics.py b/erpnext/selling/report/sales_analytics/sales_analytics.py
index f1726ab..3fc4633 100644
--- a/erpnext/selling/report/sales_analytics/sales_analytics.py
+++ b/erpnext/selling/report/sales_analytics/sales_analytics.py
@@ -194,6 +194,9 @@
 	def get_rows(self):
 		self.data = []
 		self.get_periodic_data()
+		total_row = {
+			"entity": "Total",
+		}
 
 		for entity, period_data in iteritems(self.entity_periodic_data):
 			row = {
@@ -207,6 +210,9 @@
 				row[scrub(period)] = amount
 				total += amount
 
+				if not total_row.get(scrub(period)): total_row[scrub(period)] = 0
+				total_row[scrub(period)] += amount
+
 			row["total"] = total
 
 			if self.filters.tree_type == "Item":
@@ -214,9 +220,14 @@
 
 			self.data.append(row)
 
+		self.data.append(total_row)
+
 	def get_rows_by_group(self):
 		self.get_periodic_data()
 		out = []
+		total_row = {
+				"entity": "Total",
+			}
 
 		for d in reversed(self.group_entries):
 			row = {
@@ -232,8 +243,14 @@
 					self.entity_periodic_data.setdefault(d.parent, frappe._dict()).setdefault(period, 0.0)
 					self.entity_periodic_data[d.parent][period] += amount
 				total += amount
+
+				if not total_row.get(scrub(period)): total_row[scrub(period)] = 0
+				total_row[scrub(period)] += amount
+
 			row["total"] = total
 			out = [row] + out
+
+		out.append(total_row)
 		self.data = out
 
 	def get_periodic_data(self):