尝试从 table 中的日期获取年龄，但没有成功。错误 "ORA-00923: FROM keyword not found where expected"

Question

我尝试运行并从 table 中的日期获取年龄，但最终出现错误“ORA-00923：未在预期位置找到 FROM 关键字”。

这是我第一次运行在 apex oracle

运费table

ship_id   ship_date

SEL0001   12/6/2015
SEL0002   01/5/2016

sql代码

select ship_id, YEAR(ship_date) AS [BirthDate],
YEAR(GETDATE()) AS [ThisYear],
YEAR(GETDATE()) -YEAR(ship_date) AS Age
from shipping

预期输出

ship_id   BirthDate    ThisYear   Age

SEL0001   12/6/2015     2020       5
SEL0002   01/5/2016     2020       4

有什么办法可以得到年龄吗？我尝试使用 datediff 但我不是这方面的专家。谢谢。

Answer 1

你应该在 Oracle 中使用 extract，这里是 demo。

select 
  ship_id, 
  TO_CHAR(ship_date , 'MM/DD/YYYY') as BirthDate,
  extract(YEAR from sysdate) as ThisYear,
  extract(YEAR from sysdate) -  extract(YEAR from ship_date) as Age
from shipping

输出：

*---------------------------------------*
| SHIP_ID   BIRTHDATE     THISYEAR  AGE |
*---------------------------------------*
| SEL0001   12/06/2015      2020     5  |
| SEL0002   01/05/2016      2020     4  |
*---------------------------------------*

Answer 2

使用 extract 获取年或月值，对于年龄，使用 `months_between' 获取 no.of 个月然后计算年龄。

      select ship_id,
            to_char(ship_date,'DD/MM/YYYY') "BirthDate",
            extract(year from SYSDATE) ThisYear, 
             months_between(sydate,ship_date)/12 as Age_inYears
        from shipping

尝试从 table 中的日期获取年龄，但没有成功。错误 "ORA-00923: FROM keyword not found where expected"

Try to get age from date in table but did not work. Error "ORA-00923: FROM keyword not found where expected"

sql

database

date

oracle-apex