What's the mean week number for November 12, 1978?
CREATE TABLE table_name_9 (week INTEGER, date VARCHAR)
SELECT AVG(week) FROM table_name_9 WHERE date = "november 12, 1978"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_9 (week INTEGER, date VARCHAR) Question: What's the mean week number for November 12, 1978? [/INST] SELECT AVG(week) FROM table_name_9 WHERE date = "november 12, 1978" </s>