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Vygenerujte název měsíce, název dne, číslo týdne a číslo dne mezi dvěma daty

To by mělo být snadné pomocí generátoru řádků metoda. Zbytek je pouze maska ​​formátu .

V SQL*Plus , moje demo je mezi daty '2012-01-01' a '2012-02-20' :

SQL> def date_start = '2012-01-01'
SQL> def date_end   = '2012-02-20'
SQL>
SQL> WITH DATA AS
  2    (SELECT to_date('&date_start', 'YYYY-MM-DD') date1,
  3      to_date('&date_end', 'YYYY-MM-DD') date2
  4    FROM dual
  5    )
  6  SELECT TO_CHAR(date1+LEVEL-1, 'fmMonth') month_name,
  7         TO_CHAR(date1+LEVEL-1, 'fmDay') day_name,
  8         TO_CHAR(date1+LEVEL-1, 'IW') the_week,
  9         TO_CHAR(date1+level-1, 'D') the_day
 10  FROM data
 11    CONNECT BY LEVEL <= date2-date1+1
 12  /
old   2:   (SELECT to_date('&date_start', 'YYYY-MM-DD') date1,
new   2:   (SELECT to_date('2012-01-01', 'YYYY-MM-DD') date1,
old   3:     to_date('&date_end', 'YYYY-MM-DD') date2
new   3:     to_date('2012-02-20', 'YYYY-MM-DD') date2

Výsledek

MONTH_NAME DAY_NAME  THE_WEEK THE_DAY
---------- --------- -------- -------
January    Sunday    52       1
January    Monday    01       2
January    Tuesday   01       3
January    Wednesday 01       4
January    Thursday  01       5
January    Friday    01       6
January    Saturday  01       7
January    Sunday    01       1
January    Monday    02       2
January    Tuesday   02       3
January    Wednesday 02       4
January    Thursday  02       5
January    Friday    02       6
January    Saturday  02       7
January    Sunday    02       1
January    Monday    03       2
January    Tuesday   03       3
January    Wednesday 03       4
January    Thursday  03       5
January    Friday    03       6
January    Saturday  03       7
January    Sunday    03       1
January    Monday    04       2
January    Tuesday   04       3
January    Wednesday 04       4
January    Thursday  04       5
January    Friday    04       6
January    Saturday  04       7
January    Sunday    04       1
January    Monday    05       2
January    Tuesday   05       3
February   Wednesday 05       4
February   Thursday  05       5
February   Friday    05       6
February   Saturday  05       7
February   Sunday    05       1
February   Monday    06       2
February   Tuesday   06       3
February   Wednesday 06       4
February   Thursday  06       5
February   Friday    06       6
February   Saturday  06       7
February   Sunday    06       1
February   Monday    07       2
February   Tuesday   07       3
February   Wednesday 07       4
February   Thursday  07       5
February   Friday    07       6
February   Saturday  07       7
February   Sunday    07       1
February   Monday    08       2

51 rows selected.

SQL>



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