patch: delete gle for cancelled invoices

erpnext/patches/v4_2/delete_gl_entries_for_cancelled_invoices.py

@@ -0,0 +1,13 @@
+# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+	cancelled_invoices = frappe.db.sql_list("""select name from `tabSales Invoice` 
+		where docstatus = 2 and ifnull(update_stock, 0) = 1""")
+
+	frappe.db.sql("""delete from `tabGL Entry` 
+		where voucher_type = 'Sales Invoice' and voucher_no in (%s)""" 
+		% (', '.join(['%s']*len(cancelled_invoices))), tuple(cancelled_invoices))