Select
EXTRACT(year from cast(joindate as timestamp)) as Year,
EXTRACT(month from cast(joindate as timestamp)) as Month,
EXTRACT(day from cast(joindate as timestamp)) as Day,
......
From Table
Group by Year,Month,Day
Select
EXTRACT(year from cast(joindate as timestamp)) as Year,
EXTRACT(month from cast(joindate as timestamp)) as Month,
EXTRACT(day from cast(joindate as timestamp)) as Day,
......
From Table
Group by Year,Month,Day