Oracle 獲取當前周的星期一方法
SELECT
CASE to_number(to_char(to_date('2010-01-11','yyyy-MM-dd'),'D'))
WHEN 7 THEN to_date('2010-01-11','yyyy-MM-dd')-5
WHEN 6 THEN to_date('2010-01-11','yyyy-MM-dd')-4
WHEN 5 THEN to_date('2010-01-11','yyyy-MM-dd')-3
WHEN 4 THEN to_date('2010-01-11','yyyy-MM-dd')-2
WHEN 3 THEN to_date('2010-01-11','yyyy-MM-dd')-1
WHEN 2 THEN to_date('2010-01-11','yyyy-MM-dd')
ELSE to_date('2010-01-11','yyyy-MM-dd')-6
END
AS curmon FROM dual;
SELECT
decode(to_char(trunc(to_date('2007-01-17','yyyy-MM-dd'),'YEAR'),'D'),
'2',trunc(to_date('2007-01-17','yyyy-MM-dd'),'YEAR'),
next_day(trunc(to_date('2007-01-17','yyyy-MM-dd'),'YEAR'),2)
)
+
(SELECT to_number(to_char(to_date('2007-01-17','yyyy-MM-dd'),'iw')) from dual
)*7-7
as curMon FROM dual;