CREATE TABLE table_name_7 (pick__number INT, position VARCHAR, overall VARCHAR)

Position of defensive back, and an Overall smaller than 69 is what lowest pick #?
SELECT MIN(pick__number) FROM table_name_7 WHERE position = "defensive back" AND overall < 69
SELECT MIN("pick__number") FROM "table_name_7" WHERE "defensive back" = "position" AND "overall" < 69