What is the pick number of the defensive back?
CREATE TABLE table_12165135_1 (overall_pick__number VARCHAR, position VARCHAR)
SELECT COUNT(overall_pick__number) FROM table_12165135_1 WHERE position = "Defensive Back"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_12165135_1 (overall_pick__number VARCHAR, position VARCHAR) Question: What is the pick number of the defensive back? [/INST] SELECT COUNT(overall_pick__number) FROM table_12165135_1 WHERE position = "Defensive Back" </s>