what's the total number of episodes with a US air date of january 15, 2005?
CREATE TABLE table_1231892_4 (production_code VARCHAR, us_air_date VARCHAR)
SELECT COUNT(production_code) FROM table_1231892_4 WHERE us_air_date = "January 15, 2005"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1231892_4 (production_code VARCHAR, us_air_date VARCHAR) Question: what's the total number of episodes with a US air date of january 15, 2005? [/INST] SELECT COUNT(production_code) FROM table_1231892_4 WHERE us_air_date = "January 15, 2005" </s>