Name the Round which has a Position of defensive back and corey chavous?
CREATE TABLE table_name_57 (round INTEGER, position VARCHAR, player VARCHAR)
SELECT MIN(round) FROM table_name_57 WHERE position = "defensive back" AND player = "corey chavous"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_57 (round INTEGER, position VARCHAR, player VARCHAR) Question: Name the Round which has a Position of defensive back and corey chavous? [/INST] SELECT MIN(round) FROM table_name_57 WHERE position = "defensive back" AND player = "corey chavous" </s>