怎么将下图红色框的日期换成固定获取本月最后一天的sql，并参与数字运算？
whth dataSpan as(
select to_char(date'2023-02-01'+level -1,'yyyy-mm-dd')data_date
from dual
connect by level <=date'2023-02-28' - date'2023-02-16'+1
)
LAST_DAY(sysdate)
LAST_DAY(NOW()) 就能获取本月最后一天的日期
whth dataSpan as(
select to_char(date'2023-02-01'+level -1,'yyyy-mm-dd')data_date
from dual
connect by level <=date'2023-02-28' - date'2023-02-16'+1
)
LAST_DAY(sysdate)
LAST_DAY(NOW()) 就能获取本月最后一天的日期