すべての曜日を選択して、週の最初の日にフィルタリングすることができます(date_format(selected_date, '%w') = 0
):
select selected_date, date_add(selected_date, INTERVAL 6 DAY)
from
(select adddate('1970-01-01',t4.i*10000 + t3.i*1000 + t2.i*100 + t1.i*10 + t0.i) selected_date
from
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t0,
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t1,
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t2,
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t3,
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t4) v
where selected_date between '2015-02-01' and '2015-02-28'
AND date_format(selected_date, '%w') = 0
SQLFIDDLE: http://sqlfiddle.com/#!2/7bc0e/52
を使用できます
AND DAYOFWEEK(selected_date) = 1
の代わりに
date_format(selected_date, '%w') = 0
もう少し読みやすいと思います: http://sqlfiddle.com/#!2 / 7bc0e / 54