Pgsql 獲取當前周/季度 的開始和結束時間

select date_trunc('week', current_date::timestamp) as 周開始時間;
select date_trunc('week',current_date::timestamp) + '6 days' as 周結束時間;

 

select date_trunc('quarter', current_date::timestamp) as 季度開始時間;
select date_trunc('quarter', current_date::timestamp) + '3 month' - interval '1 d' as 季度結束時間;