使用 SQL 生成日期范围
我有一个 SQL 查询，它接受一个日期参数(如果我要将它放入一个函数中)，我需要在去年的每一天运行它.
I have a SQL query that takes a date parameter (if I were to throw it into a function) and I need to run it on every day of the last year.
如何生成过去 365 天的列表，以便我可以使用直接 SQL 来执行此操作?
How to generate a list of the last 365 days, so I can use straight-up SQL to do this?
显然生成一个列表 0..364 也可以，因为我总是可以:
Obviously generating a list 0..364 would work, too, since I could always:
SELECT SYSDATE - val FROM (...);
推荐答案
无需使用超大表或 ALL_OBJECTS 表:
There's no need to use extra large tables or ALL_OBJECTS table:
SELECT TRUNC (SYSDATE - ROWNUM) dt
FROM DUAL CONNECT BY ROWNUM < 366
会解决问题.
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