loops - 如何使用 pl/SQL 函数在 LOV 项中列出数字（例如从 1 到 20）？返回值与显示值相同

Question

我正在尝试通过在 pl/SQL 函数中使用循环在 LOV 项中列出数字（例如从 1 到 20）。这一定是可能的，但我还没有成功。感谢您的宝贵帮助。

Answer 1

No need to do pl/sql, this can be achieved using the pseudo column LEVEL and the CONNECT BY clause in pure SQL. Very useful for selects like date lists, number lists, etc. For a list of numbers from 1 to 20 you could do this:

SELECT
  level  AS display_value,
  level  AS return_value
  FROM
  dual
CONNECT BY
  level <= 20