Best way to select random rows PostgreSQL

Question

I want a random selection of rows in PostgreSQL, I tried this:

select * from table where random() < 0.01;

But some other recommend this:

Answer 1

postgresql order by random(), select rows in random order:

select your_columns from your_table ORDER BY random()

postgresql order by random() with a distinct:

select * from 
  (select distinct your_columns from your_table) table_alias
ORDER BY random()

postgresql order by random limit one row:

select your_columns from your_table ORDER BY random() limit 1