[英]How to fix date format problem in Oracle?
I need to run this query我需要运行这个查询
SELECT ADD_MONTHS (
TRUNC (TO_DATE (i.list_member, 'dd-mm-yyyy'),'MM'), 1 * LEVEL - 13) month
FROM DUAL
Where i.list_member
is a VARCHAR2, which is a result of a select and the format is like mm-yyyy (09-2019)其中
i.list_member
是 VARCHAR2,这是选择的结果,格式类似于 mm-yyyy (09-2019)
When I run the query, I get当我运行查询时,我得到
SQL error [1841] [22008]: ORA-01841: the (complete) year must be between -4713 and +9999, and be different from 0
The problem is the date format, could someone help to solve it?问题是日期格式,有人可以帮忙解决吗?
i.list_member is a VARCHAR2, which is a result of a select and the format is like mm-yyyy (09-2019)
i.list_member 是一个 VARCHAR2,它是一个选择的结果,格式类似于 mm-yyyy (09-2019)
To translate the date:翻译日期:
select add_months(to_date (i.list_member, 'mm-yyyy'), level - 13) month
from dual -- you should be selecting from a table here
Or if you want the month number of the translated date:或者,如果您想要翻译日期的月份数:
select extract(month from add_months(to_date (i.list_member, 'mm-yyyy'), level - 13)) month
from dual
Format mask should match data, ie格式掩码应该匹配数据,即
SQL> alter session set nls_date_format = 'dd.mm.yyyy';
Session altered.
SQL> SELECT ADD_MONTHS (TRUNC (TO_DATE ('09-2019', 'mm-yyyy'), 'MM'),
2 1 * LEVEL - 13)
3 month ^^^^^^
4 FROM DUAL This is i.list_member
5 CONNECT BY LEVEL <= 12
6 /
MONTH
----------
01.09.2018
01.10.2018
01.11.2018
01.12.2018
01.01.2019
01.02.2019
01.03.2019
01.04.2019
01.05.2019
01.06.2019
01.07.2019
01.08.2019
12 rows selected.
SQL>
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