What is the sum of the weeks that games occured on october 21, 1974 and less than 50,623 fans attended?
CREATE TABLE table_name_20 (week INTEGER, date VARCHAR, attendance VARCHAR)
SELECT SUM(week) FROM table_name_20 WHERE date = "october 21, 1974" AND attendance < 50 OFFSET 623 ROWS
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_20 (week INTEGER, date VARCHAR, attendance VARCHAR) Question: What is the sum of the weeks that games occured on october 21, 1974 and less than 50,623 fans attended? [/INST] SELECT SUM(week) FROM table_name_20 WHERE date = "october 21, 1974" AND attendance < 50 OFFSET 623 ROWS </s>