名單

Question

問題

輸入：

START_DATE  END_DATE 

01-FEB-16  03-FEB-16 
01-FEB-16  02-FEB-16 
10-FEB-16  11-FEB-16  

我要生成所有START_DAY和END_DAY之間的日期爲

Output 

01-FEB-16  
02-FEB-16  
03-FEB-16  
10-FEB-16  
11-FEB-16  

Answer 1

你可以通過做Row Generator技術。

設置

SQL> CREATE TABLE t 
    2 (START_DATE DATE, END_DATE DATE 
    3 ); 

Table created. 

SQL> INSERT INTO t VALUES(DATE '2016-02-01', DATE '2016-02-03'); 

1 row created. 

SQL> INSERT INTO t VALUES(DATE '2016-02-01', DATE '2016-02-02'); 

1 row created. 

SQL> INSERT INTO t VALUES(DATE '2016-02-10', DATE '2016-02-11'); 

1 row created. 

SQL> COMMIT; 

Commit complete. 

查詢

SQL> SELECT DISTINCT TO_CHAR(START_DATE+LEVEL-1, 'DD-MON-YYYY') the_date 
    2 FROM t 
    3 CONNECT BY LEVEL <= END_DATE-START_DATE+1 
    4 ORDER BY the_date 
    5/

THE_DATE 
----------- 
01-FEB-2016 
02-FEB-2016 
03-FEB-2016 
10-FEB-2016 
11-FEB-2016 

SQL>