按年查询
select to_char(date::DATE, 'YYYY') as year,sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by year order by year
按月查询
select to_char(date::DATE, 'YYYY-MM') as month,sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by month order by month
按周查询
select to_char(date::DATE-(extract(dow from date::TIMESTAMP)-1||'day')::interval, 'YYYY-mm-dd') week,
sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by week order by week
按天查询
select to_char(date::DATE, 'YYYY-MM-DD') as day,sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by day order by day
按小时查询
select to_char(date::DATE, 'YYYY-MM-DD HH24') as hour,sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by hour order by hour
按分钟查询
select to_char(date::DATE, 'YYYY-MM-DD HH24:MI ') as minute,sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by minute order by minute
按秒查询
select to_char(date::DATE, 'YYYY-MM-DD HH24:MI:SS ') as second,sum(shares) as shares, sum(visits) as visits
from database_table
where date >= '2019-01-01' and date <= '2020-01-01' group by second order by second
