Oracle 是字符串文字，不是日期日期“2006-01-01”是日期文字。 SELECT to_date('1900-01-01','YYYY-MM-DD') + (rownum - 1) AS DT_CAL, rownum AS NUM_JOUR

是字符串文字，不是日期<代码>日期“2006-01-01”是日期文字。

SELECT to_date('1900-01-01','YYYY-MM-DD') + (rownum - 1) AS DT_CAL, 
       rownum AS NUM_JOUR 
FROM   dual 
CONNECT BY to_date('1900-01-01','YYYY-MM-DD') + (rownum - 1) <= 
                                                      to_date('2000-12-31','YYYY-MM-DD')