Table schema:
CREATE TABLE table_name_63 (roll INTEGER, decile VARCHAR, area VARCHAR, name VARCHAR)

Question: What is the roll number of Orautoha school in Raetihi, which has a decile smaller than 8?
SQL: SELECT SUM(roll) FROM table_name_63 WHERE area = "raetihi" AND name = "orautoha school" AND decile < 8