user: Question: What is the lowest Decile for a school with a roll smaller than 3?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Hapuku School', '1–8', 'Coed', 'Hapuku', 'State', 4.0, 23.0]
SQL:

assistant: SELECT MIN("Decile") FROM "Table" WHERE "Roll" < 3.0;