如何将列的值更新为仅包含日期的年份部分？

Question

I have a full date-time in the column ANFISCAL . I would like to update the column to have just the year.

I used

UPDATE ANIFISCALI SET ANFISCAL=EXTRACT(YEAR FROM ANFISCAL)

but it doesn't work. I'm getting this error:

ORA-00932: inconsistent datatypes: expected DATE got NUMBER

Answer 1

When you extract year from a date you are getting a number datatype .

So you are trying to update a column with date datatype with number . so you are getting the error.

ORA-00932: inconsistent datatypes: expected DATE got NUMBER.