What format to store nanoseconds values ​​in?

Question

PostgreSQL

Please tell me in what type of field to write nanoseconds in postgresql.
And tell me how can I write data to the database in nanoseconds in laravel?

Answer 1

a normal timestamp will do.
through Carbon we get any format

Answer 2

seconds is an integer part, the rest is a fractional part. what could be wrong with that?
normal decimal, no?
turning it into a string and splitting it by a point, you can work with it using bcmath and immediately see that here are seconds, here are nano.