unload('select * from traffic where timestamp < '2017-01-01' order by timestamp asc')
to 's3://xxx/export/unload/2019-01-22-3/'
iam_role 'arn:aws:iam::xxx:role/xxx'
delimiter as ','
addquotes
escape
manifest;
unload('select * from traffic where timestamp < 2017-01-01') to 's3://xxx/export/unload/2019-01-22/' iam_role '' delimiter as ',' addquotes escape allowoverwrite manifest