diff --git a/frappe/desk/reportview.py b/frappe/desk/reportview.py
index d6dce68399..893c2a6606 100644
--- a/frappe/desk/reportview.py
+++ b/frappe/desk/reportview.py
@@ -156,8 +156,6 @@ def setup_group_by(data):
 					**data
 				)
 			)
-			if data.aggregate_on_field:
-				data.fields.append(f"`tab{data.aggregate_on_doctype}`.`{data.aggregate_on_field}`")
 		else:
 			raise_invalid_field(data.aggregate_on_field)
 
@@ -435,11 +433,20 @@ def append_totals_row(data):
 def get_labels(fields, doctype):
 	"""get column labels based on column names"""
 	labels = []
+	doctype = doctype.lower()
 	for key in fields:
-		key = key.split(" as ")[0]
+		aggregate_function = ""
+
+		key = key.casefold().split(" as ", maxsplit=1)[0]
 
 		if key.startswith(("count(", "sum(", "avg(")):
-			continue
+			# Get aggregate function and _aggregate_column
+			# key = 'sum(`tabDocType`.`fieldname`)'
+			if not key.rstrip().endswith(")"):
+				continue
+			_agg_fn, _key = key.split("(", maxsplit=1)
+			aggregate_function = _agg_fn.lower()  # aggregate_function = 'sum'
+			key = _key[:-1]  # key = `tabDocType`.`fieldname`
 
 		if "." in key:
 			parenttype, fieldname = key.split(".")[0][4:-1], key.split(".")[1].strip("`")
@@ -455,7 +462,10 @@ def get_labels(fields, doctype):
 			if parenttype != doctype:
 				# If the column is from a child table, append the child doctype.
 				# For example, "Item Code (Sales Invoice Item)".
-				label += f" ({ _(parenttype) })"
+				label += f" ({ _(parenttype.title()) })"
+
+		if aggregate_function:
+			label = _("{0} of {1}").format(aggregate_function.capitalize(), label)
 
 		labels.append(label)
 
@@ -464,7 +474,7 @@ def get_labels(fields, doctype):
 
 def handle_duration_fieldtype_values(doctype, data, fields):
 	for field in fields:
-		key = field.split(" as ")[0]
+		key = field.casefold().split(" as ", maxsplit=1)[0]
 
 		if key.startswith(("count(", "sum(", "avg(")):
 			continue
diff --git a/frappe/model/db_query.py b/frappe/model/db_query.py
index 7fb38848e2..0b8f790246 100644
--- a/frappe/model/db_query.py
+++ b/frappe/model/db_query.py
@@ -417,6 +417,8 @@ class DatabaseQuery(object):
 			"extract(",
 			"locate(",
 			"strpos(",
+		]
+		aggregate_functions = [
 			"count(",
 			"sum(",
 			"avg(",
@@ -427,6 +429,9 @@ class DatabaseQuery(object):
 				if not ("tab" in field and "." in field) or any(x for x in sql_functions if x in field):
 					continue
 
+				if any(x for x in aggregate_functions if x in field):
+					field = field.split("(", 1)[1][:-1]
+
 				table_name = field.split(".")[0]
 
 				if table_name.lower().startswith("group_concat("):
diff --git a/frappe/tests/test_db_query.py b/frappe/tests/test_db_query.py
index c1b2e05266..2dd1743767 100644
--- a/frappe/tests/test_db_query.py
+++ b/frappe/tests/test_db_query.py
@@ -643,9 +643,7 @@ class TestReportview(unittest.TestCase):
 		)
 
 		response = execute_cmd("frappe.desk.reportview.get")
-		self.assertListEqual(
-			response["keys"], ["field_label", "field_name", "_aggregate_column", "columns"]
-		)
+		self.assertListEqual(response["keys"], ["field_label", "field_name", "_aggregate_column"])
 
 	def test_cast_name(self):
 		from frappe.core.doctype.doctype.test_doctype import new_doctype