sql - 从两个日期列生成日期范围

Question

源表如下:

Id   start_date   end_date    field1
1    01/03/2019   07/03/2019  text1
2    10/04/2019   15/04/2019  text2

我想得到这个输出:

Id date        field1
1  01/03/2019  text1
1  02/03/2019  text1
1  03/03/2019  text1
1  04/03/2019  text1
1  05/03/2019  text1
1  06/03/2019  text1
1  07/04/2019  text1
2  10/04/2019  text2
2  11/04/2019  text2
2  12/04/2019  text2
2  13/04/2019  text2
2  14/04/2019  text2
2  15/04/2019  text2

我必须使用循环来填充此表？

谢谢

Answer 1

您可以使用 prior + sys_guid() 来使用 connect by 查询技巧

select id,start_date + level - 1 as "date", field1 from t 
connect by level <= end_date - start_date  + 1
    and prior id = id
and prior sys_guid() is not null;

DEMO