在 Postgresql 中从周二开始按周分组答案

【问题标题】：Grouping by week starting on Tuesday in Postgresql在 Postgresql 中从周二开始按周分组
【发布时间】：2021-08-03 11:06:01
【问题描述】：

我在这里有一个代码，它根据星期天、星期一和星期二对所有数据进行分组。代码在周一和周日有效，但在周二，如您所见，10 月 12 日在下周的周二分组。

代码：

select case when day.week_starting = 'Sunday' then date_trunc('week', table1.date::date + 1)::date - 1
when day.week_starting = 'Tuesday' then date_trunc('week', table1.date::date + 2)::date + 1
when day.week_starting = 'Monday' then date_trunc('week', table1.date::date)::date
end as local_date_created, date

【问题讨论】：

标签： postgresql group-by

【解决方案1】：

更新：我找到了解决方法。这里：

case when day.week_starting = 'Sunday' then date_trunc('week', table1.date::date + 1)::date - 1
    when day.week_starting = 'Tuesday' then date_trunc('week', table1.date::date)::date + 1
    when day.week_starting = 'Monday' then date_trunc('week', table1.date::date)::date
    end as local_date_created,date

【讨论】：