Sql 使用model子句展开日期

我有几种不同类型的数据涉及日期范围，我想将它们合并在一起，但同时按日期进行细分。因此，一段3天的数据将产生三行：

start    primary_key
start+1  primary_key
start+2  primary_key

我一直在10g中使用select语句的model子句，并在寻找实现这一点的最佳方法。目前我加入了一系列的日期，涵盖了所有可能的日期选择minstart日期，maxend日期。我更喜欢选择数据并添加更多行，以将其转换为每日数据集

编辑：

我已经设法提出了以下示例数据：

    SELECT * FROM (
        SELECT 123 req_code, 
               345 req_par_code, 
               TO_DATE('01-03-2010', 'dd-mm-yyyy') req_start_date, 
               TO_DATE('05-03-2010', 'dd-mm-yyyy') req_end_date
        FROM dual
)

    MODEL 
        PARTITION BY (req_code)
        DIMENSION BY (0 d)
        MEASURES     (SYSDATE dt, req_par_code, req_start_date, req_end_date)
        RULES ITERATE(365) UNTIL (dt[iteration_number] >= TRUNC(req_end_date[0])) (
            dt[iteration_number] = NVL(dt[iteration_number-1] + 1, TRUNC(req_start_date[0])),

            --Copy data across
            req_par_code[ iteration_number ] = req_par_code[0],
            req_start_date[ iteration_number ] = req_start_date[0],
            req_end_date[ iteration_number ] = req_end_date[0]
        )
    ORDER BY dt, req_code;

---

将为您提供从2009年1月1日到今天的所有日期的列表。

您可以使用MODEL子句生成行，下面是一个小示例：

SQL> SELECT * FROM t_data;

        PK START_DATE  END_DATE
---------- ----------- -----------
         1 20/01/2010  20/01/2010
         2 21/01/2010  23/01/2010
         3 24/01/2010  27/01/2010

SQL> SELECT pk, start_date, end_date FROM t_data
  2  MODEL
  3     PARTITION BY (pk)
  4     DIMENSION BY (0 AS i)
  5     MEASURES(start_date, end_date)
  6     RULES
  7     (  start_date[FOR i
  8                   FROM 1 TO end_date[0]-start_date[0]
  9                   INCREMENT 1] = start_date[0] + cv(i),
 10        end_date[ANY] = start_date[CV()] + 1
 11     )
 12  ORDER BY 1,2;

        PK START_DATE  END_DATE
---------- ----------- -----------
         1 20/01/2010  21/01/2010
         2 21/01/2010  22/01/2010
         2 22/01/2010  23/01/2010
         2 23/01/2010  24/01/2010
         3 24/01/2010  25/01/2010
         3 25/01/2010  26/01/2010
         3 26/01/2010  27/01/2010
         3 27/01/2010  28/01/2010

---

但是如果我有诸如：01/01/10到03/01/10 01/02/10到03/02/10这样的数据，并且想要以6行结束，我仍然需要计算要制造多少个日期，然后跨行连接，这不是我试图实现的。如何给出CREATE TABLE和INSERT命令，并指出您实际期望的内容。

SQL> SELECT * FROM t_data;

        PK START_DATE  END_DATE
---------- ----------- -----------
         1 20/01/2010  20/01/2010
         2 21/01/2010  23/01/2010
         3 24/01/2010  27/01/2010

SQL> SELECT pk, start_date, end_date FROM t_data
  2  MODEL
  3     PARTITION BY (pk)
  4     DIMENSION BY (0 AS i)
  5     MEASURES(start_date, end_date)
  6     RULES
  7     (  start_date[FOR i
  8                   FROM 1 TO end_date[0]-start_date[0]
  9                   INCREMENT 1] = start_date[0] + cv(i),
 10        end_date[ANY] = start_date[CV()] + 1
 11     )
 12  ORDER BY 1,2;

        PK START_DATE  END_DATE
---------- ----------- -----------
         1 20/01/2010  21/01/2010
         2 21/01/2010  22/01/2010
         2 22/01/2010  23/01/2010
         2 23/01/2010  24/01/2010
         3 24/01/2010  25/01/2010
         3 25/01/2010  26/01/2010
         3 26/01/2010  27/01/2010
         3 27/01/2010  28/01/2010