Difference between two dates with one date as timestamp without time zone

Question

I want to compute the difference of year between today's date and date of variable called "creation date" which is a timestamp without time zone. This is the code I used. However, it returned this error "syntax error at or near ")"". I have no idea why.

select DATEDIFF(year, ('2020/01/01', to_date (created_at, 'YYYY/MM/DD') ))

Answer 1

Try this:

SELECT DATEDIFF(curdate(), created_at);

DATEDIFF function will return the number of days between two dates. curdate() will give you the current date.

If that does not work, try this:

DATEDIFF(year, CURRENT_TIMESTAMP, created_at)

Or this:

SELECT DATE_PART('year', CURRENT_DATE) - DATE_PART('year', created_at::date);

The above options are different options depending on the database. I do not know what does https://mode.com/online-sql-editor/ support.