diff --git a/frappe/__init__.py b/frappe/__init__.py
index c906a69918..defa6e3336 100644
--- a/frappe/__init__.py
+++ b/frappe/__init__.py
@@ -28,7 +28,11 @@ from .exceptions import *
 from .utils.jinja import (get_jenv, get_template, render_template, get_email_from_template, get_jloader)
 from .utils.lazy_loader import lazy_import
 
-from frappe.query_builder import get_query_builder, patch_query_execute
+from frappe.query_builder import (
+	get_query_builder,
+	patch_query_execute,
+	patch_query_aggregation,
+)
 
 __version__ = '14.0.0-dev'
 
@@ -211,6 +215,7 @@ def init(site, sites_path=None, new_site=False):
 
 	setup_module_map()
 	patch_query_execute()
+	patch_query_aggregation()
 
 	local.initialised = True
 
diff --git a/frappe/database/database.py b/frappe/database/database.py
index 411587aa7e..f489cea7de 100644
--- a/frappe/database/database.py
+++ b/frappe/database/database.py
@@ -836,18 +836,6 @@ class Database(object):
 			except Exception:
 				return None
 
-	def min(self, dt, fieldname, filters=None, **kwargs):
-		return self.query.build_conditions(dt, filters=filters).select(Min(Column(fieldname))).run(**kwargs)[0][0] or 0
-
-	def max(self, dt, fieldname, filters=None, **kwargs):
-		return self.query.build_conditions(dt, filters=filters).select(Max(Column(fieldname))).run(**kwargs)[0][0] or 0
-
-	def avg(self, dt, fieldname, filters=None, **kwargs):
-		return self.query.build_conditions(dt, filters=filters).select(Avg(Column(fieldname))).run(**kwargs)[0][0] or 0
-
-	def sum(self, dt, fieldname, filters=None, **kwargs):
-		return self.query.build_conditions(dt, filters=filters).select(Sum(Column(fieldname))).run(**kwargs)[0][0] or 0
-
 	def count(self, dt, filters=None, debug=False, cache=False):
 		"""Returns `COUNT(*)` for given DocType and filters."""
 		if cache and not filters:
diff --git a/frappe/deferred_insert.py b/frappe/deferred_insert.py
index 499fc5e41b..b1338a73b0 100644
--- a/frappe/deferred_insert.py
+++ b/frappe/deferred_insert.py
@@ -5,7 +5,6 @@ from frappe.utils import cstr
 
 queue_prefix = 'insert_queue_for_'
 
-@frappe.whitelist()
 def deferred_insert(doctype, records):
 	frappe.cache().rpush(queue_prefix + doctype, records)
 
diff --git a/frappe/desk/doctype/route_history/route_history.py b/frappe/desk/doctype/route_history/route_history.py
index 01184fcc3a..fc87312950 100644
--- a/frappe/desk/doctype/route_history/route_history.py
+++ b/frappe/desk/doctype/route_history/route_history.py
@@ -1,9 +1,13 @@
 # Copyright (c) 2021, Frappe Technologies and contributors
 # License: MIT. See LICENSE
 
+import json
+
 import frappe
+from frappe.deferred_insert import deferred_insert as _deferred_insert
 from frappe.model.document import Document
 
+
 class RouteHistory(Document):
 	pass
 
@@ -35,3 +39,19 @@ def flush_old_route_records():
 			"modified": ("<=", last_record_to_keep[0].modified),
 			"user": user
 		})
+
+@frappe.whitelist()
+def deferred_insert(routes):
+	routes_record = []
+
+	if isinstance(routes, str):
+		routes = json.loads(routes)
+
+	for route_doc in routes:
+		routes_record.append({
+			"user": frappe.session.user,
+			"route": route_doc.get("route"),
+			"creation": route_doc.get("creation")
+		})
+
+	_deferred_insert("Route History", json.dumps(routes_record))
diff --git a/frappe/patches.txt b/frappe/patches.txt
index b230c336b4..3078159c3d 100644
--- a/frappe/patches.txt
+++ b/frappe/patches.txt
@@ -186,3 +186,4 @@ frappe.patches.v14_0.rename_cancelled_documents
 frappe.patches.v14_0.copy_mail_data #08.03.21
 frappe.patches.v14_0.update_workspace2 # 20.09.2021
 frappe.patches.v14_0.update_github_endpoints #08-11-2021
+frappe.patches.v14_0.remove_db_aggregation
diff --git a/frappe/patches/v14_0/remove_db_aggregation.py b/frappe/patches/v14_0/remove_db_aggregation.py
new file mode 100644
index 0000000000..25a170f362
--- /dev/null
+++ b/frappe/patches/v14_0/remove_db_aggregation.py
@@ -0,0 +1,32 @@
+import re
+
+import frappe
+from frappe.query_builder import DocType
+
+
+def execute():
+	"""Replace temporarily available Database Aggregate APIs on frappe (develop)
+
+	APIs changed:
+		* frappe.db.max => frappe.qb.max
+		* frappe.db.min => frappe.qb.min
+		* frappe.db.sum => frappe.qb.sum
+		* frappe.db.avg => frappe.qb.avg
+	"""
+	ServerScript = DocType("Server Script")
+	server_scripts = frappe.qb.from_(ServerScript).where(
+		ServerScript.script.like("%frappe.db.max(%")
+		| ServerScript.script.like("%frappe.db.min(%")
+		| ServerScript.script.like("%frappe.db.sum(%")
+		| ServerScript.script.like("%frappe.db.avg(%")
+	).select(
+		"name", "script"
+	).run(as_dict=True)
+
+	for server_script in server_scripts:
+		name, script = server_script["name"], server_script["script"]
+
+		for agg in ["avg", "max", "min", "sum"]:
+			script = re.sub(f"frappe.db.{agg}(", f"frappe.qb.{agg}(", script)
+
+		frappe.db.update("Server Script", name, "script", script)
diff --git a/frappe/public/js/frappe/form/multi_select_dialog.js b/frappe/public/js/frappe/form/multi_select_dialog.js
index 37b7e08a80..161e4196b0 100644
--- a/frappe/public/js/frappe/form/multi_select_dialog.js
+++ b/frappe/public/js/frappe/form/multi_select_dialog.js
@@ -325,7 +325,9 @@ frappe.ui.form.MultiSelectDialog = class MultiSelectDialog {
 		let parent_names = this.child_datatable.rowmanager.checkMap.reduce((parent_names, checked, index) => {
 			if (checked == 1) {
 				const parent_name = this.child_results[index].parent;
-				parent_names.push(parent_name);
+				if (!parent_names.includes(parent_name)) {
+					parent_names.push(parent_name);
+				}
 			}
 			return parent_names;
 		}, []);
diff --git a/frappe/public/js/frappe/router_history.js b/frappe/public/js/frappe/router_history.js
index c64c3fc9f2..fb2d5790da 100644
--- a/frappe/public/js/frappe/router_history.js
+++ b/frappe/public/js/frappe/router_history.js
@@ -5,13 +5,14 @@ const save_routes = frappe.utils.debounce(() => {
 	if (frappe.session.user === 'Guest') return;
 	const routes = frappe.route_history_queue;
 	frappe.route_history_queue = [];
-	
-	frappe.xcall('frappe.deferred_insert.deferred_insert', {
-		'doctype': 'Route History',
-		'records': routes
+
+	if (!routes.length) return;
+
+	frappe.xcall('frappe.desk.doctype.route_history.route_history.deferred_insert', {
+		'routes': routes
 	}).catch(() => {
 		frappe.route_history_queue.concat(routes);
-	});	
+	});
 
 }, 10000);
 
@@ -19,7 +20,6 @@ frappe.router.on('change', () => {
 	const route = frappe.get_route();
 	if (is_route_useful(route)) {
 		frappe.route_history_queue.push({
-			'user': frappe.session.user,
 			'creation': frappe.datetime.now_datetime(),
 			'route': frappe.get_route_str()
 		});
diff --git a/frappe/query_builder/__init__.py b/frappe/query_builder/__init__.py
index 4a1fe8fb84..9c7432142f 100644
--- a/frappe/query_builder/__init__.py
+++ b/frappe/query_builder/__init__.py
@@ -1,2 +1,2 @@
 from pypika import *
-from frappe.query_builder.utils import Column, DocType, get_query_builder, patch_query_execute
+from frappe.query_builder.utils import Column, DocType, get_query_builder, patch_query_execute, patch_query_aggregation
diff --git a/frappe/query_builder/functions.py b/frappe/query_builder/functions.py
index 39c67178c2..c98df775b7 100644
--- a/frappe/query_builder/functions.py
+++ b/frappe/query_builder/functions.py
@@ -2,6 +2,8 @@ from pypika.functions import *
 from pypika.terms import Function
 from frappe.query_builder.utils import ImportMapper, db_type_is
 from frappe.query_builder.custom import GROUP_CONCAT, STRING_AGG, MATCH, TO_TSVECTOR
+from frappe.database.query import Query
+from .utils import Column
 
 
 class Concat_ws(Function):
@@ -22,3 +24,26 @@ Match = ImportMapper(
 		db_type_is.POSTGRES: TO_TSVECTOR
 	}
 )
+
+
+def _aggregate(function, dt, fieldname, filters, **kwargs):
+	return (
+		Query()
+		.build_conditions(dt, filters)
+		.select(function(Column(fieldname)))
+		.run(**kwargs)[0][0]
+		or 0
+	)
+
+
+def _max(dt, fieldname, filters=None, **kwargs):
+	return _aggregate(Max, dt, fieldname, filters, **kwargs)
+
+def _min(dt, fieldname, filters=None, **kwargs):
+	return _aggregate(Min, dt, fieldname, filters, **kwargs)
+
+def _avg(dt, fieldname, filters=None, **kwargs):
+	return _aggregate(Avg, dt, fieldname, filters, **kwargs)
+
+def _sum(dt, fieldname, filters=None, **kwargs):
+	return _aggregate(Sum, dt, fieldname, filters, **kwargs)
\ No newline at end of file
diff --git a/frappe/query_builder/utils.py b/frappe/query_builder/utils.py
index b7d22fc354..a7f52df012 100644
--- a/frappe/query_builder/utils.py
+++ b/frappe/query_builder/utils.py
@@ -67,3 +67,14 @@ def patch_query_execute():
 		raise BuilderIdentificationFailed
 
 	builder_class.run = execute_query
+
+
+def patch_query_aggregation():
+	"""Patch aggregation functions to frappe.qb
+	"""
+	from frappe.query_builder.functions import _max, _min, _avg, _sum
+
+	frappe.qb.max = _max
+	frappe.qb.min = _min
+	frappe.qb.avg = _avg
+	frappe.qb.sum = _sum
\ No newline at end of file
diff --git a/frappe/utils/safe_exec.py b/frappe/utils/safe_exec.py
index 00b7822104..6f317855a0 100644
--- a/frappe/utils/safe_exec.py
+++ b/frappe/utils/safe_exec.py
@@ -165,10 +165,6 @@ def get_safe_globals():
 			get_default=frappe.db.get_default,
 			exists=frappe.db.exists,
 			count=frappe.db.count,
-			min=frappe.db.min,
-			max=frappe.db.max,
-			avg=frappe.db.avg,
-			sum=frappe.db.sum,
 			escape=frappe.db.escape,
 			sql=read_sql,
 			commit=frappe.db.commit,