CREATE TABLE table_name_58 (goals_against NUMBER, points_1 VARCHAR2, drawn VARCHAR2)

What is the smallest number of goals against when there are 1 of 18 points, and more than 8 are drawn?
SELECT MIN(goals_against) FROM table_name_58 WHERE points_1 = "18" AND drawn > 8
SELECT MIN("goals_against") FROM "table_name_58" WHERE "18" = "points_1" AND "drawn" > 8