user: Question: How many reg GP for nathan barrett in a round less than 8?
Columns: ['Rd #', 'Pick #', 'Player', 'Team (League)', 'Reg GP', 'Pl GP']
Types: ['real', 'real', 'text', 'text', 'real', 'real']
Sample row: [1.0, 23.0, 'Nathan Smith', 'Swift Current Broncos ( WHL )', 4.0, 4.0]
SQL:

assistant: SELECT SUM("Reg GP") FROM "Table" WHERE "Player" = 'nathan barrett' AND "Rd #" < 8.0;