1 -- 计算指定日期本周的第一天和最后一天 2 select 3 day 4 ,dayofweek(day) as dw1 5 ,date_add(day,1 - dayofweek(day)) as Su_s -- 周日_start 6 ,date_add(day,7 - dayofweek(day)) as Sa_e -- 周六_end 7 ,case when dayofweek(day) = 1 then 7 else dayofweek(day) - 1 end as dw2 8 ,date_add(day,1 - case when dayofweek(day) = 1 then 7 else dayofweek(day) - 1 end) as Mo_s -- 周一_start 9 ,date_add(day,7 - case when dayofweek(day) = 1 then 7 else dayofweek(day) - 1 end) as Su_e -- 周日_end 10 from ( 11 select '2018-07-01' as day union all 12 select '2018-07-02' as day union all 13 select '2018-07-03' as day union all 14 select '2018-07-04' as day union all 15 select '2018-07-05' as day union all 16 select '2018-07-06' as day union all 17 select '2018-07-07' as day union all 18 select '2018-07-08' as day union all 19 select '2018-07-09' as day union all 20 select '2018-07-10' as day union all 21 select '2018-07-11' as day union all 22 select '2018-07-12' as day union all 23 select '2018-07-13' as day union all 24 select '2018-07-14' as day union all 25 select '2018-07-15' as day union all 26 select '2018-07-16' as day union all 27 select '2018-07-17' as day union all 28 select '2018-07-18' as day union all 29 select '2018-07-19' as day union all 30 select '2018-07-20' as day union all 31 select '2018-07-21' as day union all 32 select '2018-07-22' as day 33 ) t1 34 ;