Name the service for 7th marines rank of sergeant
CREATE TABLE table_name_20 (service VARCHAR, unit VARCHAR, rank VARCHAR)
SELECT service FROM table_name_20 WHERE unit = "7th marines" AND rank = "sergeant"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_20 (service VARCHAR, unit VARCHAR, rank VARCHAR) Question: Name the service for 7th marines rank of sergeant [/INST] SELECT service FROM table_name_20 WHERE unit = "7th marines" AND rank = "sergeant" </s>