PostgreSQL實(shí)現(xiàn)按年、月、日、周、時(shí)、分、秒的分組統(tǒng)計(jì)
發(fā)布日期：2022-07-15 19:46 | 文章來源：站長(zhǎng)之家
按年查詢
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
按月查詢
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
按周查詢
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
按天查詢
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
按小時(shí)查詢
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
按分鐘查詢
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
按秒查詢
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
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