import frappe

def execute():

	frappe.reload_doc('selling', 'doctype', 'sales_order_item', force=True)
	frappe.reload_doc('buying', 'doctype', 'purchase_order_item', force=True)

	for doctype in ('Sales Order Item', 'Purchase Order Item'):
		frappe.db.sql("""
			UPDATE `tab{0}`
			SET against_blanket_order = 1
			WHERE ifnull(blanket_order, '') != ''
		""".format(doctype))
