What kind of Winning driver has a Winning constructor of mercer?
CREATE TABLE table_name_18 (winning_driver VARCHAR, winning_constructor VARCHAR)
SELECT winning_driver FROM table_name_18 WHERE winning_constructor = "mercer"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_18 (winning_driver VARCHAR, winning_constructor VARCHAR) Question: What kind of Winning driver has a Winning constructor of mercer? [/INST] SELECT winning_driver FROM table_name_18 WHERE winning_constructor = "mercer" </s>