What is the total number of episodes aired in Canada on 22 October 2004?
CREATE TABLE table_name_18 (episode VARCHAR, airdate__canada_ VARCHAR)
SELECT COUNT(episode) FROM table_name_18 WHERE airdate__canada_ = "22 october 2004"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_18 (episode VARCHAR, airdate__canada_ VARCHAR) Question: What is the total number of episodes aired in Canada on 22 October 2004? [/INST] SELECT COUNT(episode) FROM table_name_18 WHERE airdate__canada_ = "22 october 2004" </s>