基本結構，其中t.d在oracle中為date型別 ：
select to_char(t.d,'q'),sum(t.d2) from table t group by to_char(t.d,'q')select substr(t.take_time,0,4)||'.'||to_char(to_date(t.take_time, 'yyyy-mm-dd'), 'q') sj, count(*)
from d_video t
group by substr(t.take_time,0,4)||'.'||to_char(to_date(t.take_time, 'yyyy-mm-dd'), 'q')
order by substr(t.take_time,0,4)||'.'||to_char(to_date(t.take_time, 'yyyy-mm-dd'), 'q')
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