What is the average roll for Fairfield school?
CREATE TABLE table_name_18 (roll INTEGER, name VARCHAR)
SELECT AVG(roll) FROM table_name_18 WHERE name = "fairfield school"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_18 (roll INTEGER, name VARCHAR) Question: What is the average roll for Fairfield school? [/INST] SELECT AVG(roll) FROM table_name_18 WHERE name = "fairfield school" </s>