What was the production code for the episode that debuted October 1, 1993?
CREATE TABLE table_2468961_4 (production_code INTEGER, original_air_date VARCHAR)
SELECT MAX(production_code) FROM table_2468961_4 WHERE original_air_date = "October 1, 1993"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2468961_4 (production_code INTEGER, original_air_date VARCHAR) Question: What was the production code for the episode that debuted October 1, 1993? [/INST] SELECT MAX(production_code) FROM table_2468961_4 WHERE original_air_date = "October 1, 1993" </s>