user: Question: Name the least goals against for played more than 38
Columns: ['Position', 'Club', 'Played', 'Points', 'Wins', 'Draws', 'Losses', 'Goals for', 'Goals against', 'Goal Difference']
Types: ['real', 'text', 'real', 'text', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Real Murcia', 38.0, '52+14', 22.0, 8.0, 8.0, 66.0, 30.0, 36.0]
SQL:

assistant: SELECT MIN("Goals against") FROM "Table" WHERE "Played" > 38.0;