Hello,
I have a 'big' problem:
I have the following table users(name, start_time, end_time), a new row
is set whenever a user logs into a server. I want to know how many
users have logged in EVERYDAY between 2 different dates. The only idea
that I have is making several select (one for each day): SELECT COUNT(name) FROM users WHERE start_time between
"startDate"
and "startDate+1" SELECT COUNT(name) FROM users WHERE start_time between "startDate+1"
and "startDate+2" ...
I would like to know if its possible to make it in 1 sql statement or
just which is the best efficient way to solve it.
By the way, I use Postgres 7.4.
Thanks!
--
Josep Sanmarti
Analista de Projectes
Grup OpenWired, S.L.
Caballero, 87 - 08029 - Barcelona (Spain)
Tel (+34) 93/410 75 70 - Fax (+34) 93/419 45 91