When were 668 units produced?
CREATE TABLE table_1245350_1 (production_period VARCHAR, units_produced VARCHAR)
SELECT production_period FROM table_1245350_1 WHERE units_produced = 668
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1245350_1 (production_period VARCHAR, units_produced VARCHAR) Question: When were 668 units produced? [/INST] SELECT production_period FROM table_1245350_1 WHERE units_produced = 668 </s>