SELECT
channelGrouping as Default_Channel_Grouping,
SUM (totals.visits) as Sessions,
SUM(case when hits.page.pageTitle CONTAINS ('rafinha - Dugout') then 1 else 0 end) as Rafinha_Sessions
FROM

(TABLE_DATE_RANGE([133338516.ga_sessions_],
                TIMESTAMP('2017-10-01'),
                TIMESTAMP('2017-10-20')))
GROUP BY Default_Channel_Grouping
ORDER BY Sessions DESC