refactor: convert sql query to query builder

erpnext/controllers/accounts_controller.py

@@ -383,13 +383,14 @@ class AccountsController(TransactionBase):
 					== 1
 				)
 			).run()
-			frappe.db.sql(
-				"delete from `tabGL Entry` where voucher_type=%s and voucher_no=%s", (self.doctype, self.name)
-			)
-			frappe.db.sql(
-				"delete from `tabStock Ledger Entry` where voucher_type=%s and voucher_no=%s",
-				(self.doctype, self.name),
-			)
+			gle = frappe.qb.DocType("GL Entry")
+			frappe.qb.from_(gle).delete().where(
+				(gle.voucher_type == self.doctype) & (gle.voucher_no == self.name)
+			).run()
+			sle = frappe.qb.DocType("Stock Ledger Entry")
+			frappe.qb.from_(gle).delete().where(
+				(sle.voucher_type == self.doctype) & (sle.voucher_no == self.name)
+			).run()
 
 	def remove_serial_and_batch_bundle(self):
 		bundles = frappe.get_all(
@@ -1164,11 +1165,12 @@ class AccountsController(TransactionBase):
 	def clear_unallocated_advances(self, childtype, parentfield):
 		self.set(parentfield, self.get(parentfield, {"allocated_amount": ["not in", [0, None, ""]]}))
 
-		frappe.db.sql(
-			"""delete from `tab{}` where parentfield={} and parent = {}
-			and allocated_amount = 0""".format(childtype, "%s", "%s"),
-			(parentfield, self.name),
-		)
+		doctype = frappe.qb.DocType(childtype)
+		frappe.qb.from_(doctype).delete().where(
+			(doctype.parentfield == parentfield)
+			& (doctype.parent == self.name)
+			& (doctype.allocated_amount == 0)
+		).run()
 
 	@frappe.whitelist()
 	def apply_shipping_rule(self):
@@ -2143,11 +2145,9 @@ class AccountsController(TransactionBase):
 		for adv in self.advances:
 			consider_for_total_advance = True
 			if adv.reference_name == linked_doc_name:
-				frappe.db.sql(
-					f"""delete from `tab{self.doctype} Advance`
-					where name = %s""",
-					adv.name,
-				)
+				doctype = frappe.qb.DocType(self.doctype + " Advance")
+				frappe.qb.from_(doctype).delete().where(doctype.name == adv.name).run()
+
 				consider_for_total_advance = False
 
 			if consider_for_total_advance: