When did Oliver Jarvis have pole position?
CREATE TABLE table_21321935_2 (date VARCHAR, pole_position VARCHAR)
SELECT date FROM table_21321935_2 WHERE pole_position = "Oliver Jarvis"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21321935_2 (date VARCHAR, pole_position VARCHAR) Question: When did Oliver Jarvis have pole position? [/INST] SELECT date FROM table_21321935_2 WHERE pole_position = "Oliver Jarvis" </s>