On 11/13/2018 12:39 PM, Andreas Kretschmer wrote:
Am 13.11.2018 um 19:12 schrieb Ron:
On 11/13/2018 12:07 PM, Andreas Kretschmer wrote:
Am 13.11.2018 um 17:42 schrieb Олег Самойлов:
insert into gender (gender) select case when random<0.50 then 'female'
when random<0.99 then 'male' else 'other' end from (select random() as
random, generate_series(1,:table_size)) as subselect;
is that really your intended data distibution? 99% male?
select case when random<0.50 then 'female'
when random<0.99 then 'male'
else 'other' end
from (select random() as random, generate_series(1,:table_size)) as
subselect;
Shouldn't that make 49% male?
you are right, my fault :-(.
the case - statement will be left if the first condition is true.
I had to read it thrice. :) It's an example of why I like white space and
indenting...
--
Angular momentum makes the world go 'round.
