How to write bigint (timestamp in milliseconds) value as timestamp in postgresql

Question

I\'m trying to store in timestamp with timezone field my value. It is in milliseconds from 1970.

select TO_CHAR(TO_TIMESTAMP(1401432881230), \'DD/MM/YYYY HH24:MI:S

Answer 1

Unix timestamps measures time with seconds, and not milliseconds (almost everywhere, in PostgreSQL too).

Therefore you need to call

SELECT TO_TIMESTAMP(1401432881230 / 1000);

If you want to preserve milliseconds, call with double precision:

SELECT TO_TIMESTAMP(1401432881230::double precision / 1000);