What was the attendance on 31 January 2009 when the opponent was Airdrie United?
CREATE TABLE table_name_33 (attendance INTEGER, opponent VARCHAR, date VARCHAR)
SELECT AVG(attendance) FROM table_name_33 WHERE opponent = "airdrie united" AND date = "31 january 2009"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_33 (attendance INTEGER, opponent VARCHAR, date VARCHAR) Question: What was the attendance on 31 January 2009 when the opponent was Airdrie United? [/INST] SELECT AVG(attendance) FROM table_name_33 WHERE opponent = "airdrie united" AND date = "31 january 2009" </s>