Take the 2-minute tour ×
Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. It's 100% free, no registration required.

I need to convert a value of Double Precision to Bigint with PostgreSQL. How can I do that?

I have tried with to_bigint(myvalue) but that function didn't exist.

share|improve this question

1 Answer 1

up vote 11 down vote accepted

There are two ways to typecast in Postgres:

You either do it the SQL standard way:

select cast(3.141593 as bigint);

or you could use the Postgres-specific cast operator: ::

select (3.141593 :: bigint);

You might also want to consider the various rounding functions.

share|improve this answer
+1 for linking to the manual –  a_horse_with_no_name Jun 22 '11 at 11:23

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.