user: ### NOW ANSWER:
Question: What is the sum for every value of Decile in Clendon?
Columns: ['Name', 'Type', 'Local board', 'Suburb', 'Authority', 'Decile']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Arohanui Special School', 'Intellectual impairments', 'Henderson–Massey', 'Glendene', 'State', 5.0]
SQL:

assistant: SELECT SUM("Decile") FROM "Table" WHERE "Suburb" = 'Clendon';