brotherton-erpnext/erpnext/patches/v12_0/update_is_cancelled_field.py

from __future__ import unicode_literals

import frappe


def execute():
	try:
		frappe.db.sql("UPDATE `tabStock Ledger Entry` SET is_cancelled = 0 where is_cancelled in ('', NULL, 'No')")
		frappe.db.sql("UPDATE `tabSerial No` SET is_cancelled = 0 where is_cancelled in ('', NULL, 'No')")

		frappe.db.sql("UPDATE `tabStock Ledger Entry` SET is_cancelled = 1 where is_cancelled = 'Yes'")
		frappe.db.sql("UPDATE `tabSerial No` SET is_cancelled = 1 where is_cancelled = 'Yes'")

		frappe.reload_doc("stock", "doctype", "stock_ledger_entry")
		frappe.reload_doc("stock", "doctype", "serial_no")
	except Exception:
		pass