When there are  3.39 million u.s viewers what is the production code?
CREATE TABLE table_19068566_1 (production_code VARCHAR, us_viewers__million_ VARCHAR)
SELECT production_code FROM table_19068566_1 WHERE us_viewers__million_ = "3.39"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_19068566_1 (production_code VARCHAR, us_viewers__million_ VARCHAR) Question: When there are  3.39 million u.s viewers what is the production code? [/INST] SELECT production_code FROM table_19068566_1 WHERE us_viewers__million_ = "3.39" </s>