SQL query with summed statistical data, grouped by date - sql

Question

I'm trying to wrap my head around a problem with making a query for a statistical overview of a system.
The table I want to pull data from is called 'Event', and holds the following columns (among others, only the necessary is posted):
date (as timestamp)
positionId (as number)
eventType (as string)
Another table that most likely is necessary is 'Location', with, among others, holds the following columns:
id (as number)
clinic (as boolean)
What I want is a sum of events in different conditions, grouped by days. The user can give an input over the range of days wanted, which means the output should only show a line per day inside the given limits. The columns should be the following:
date: a date, grouping the data by days
deliverySum: A sum of entries for the given day, where eventType is 'sightingDelivered', and the Location with id=posiitonId has clinic=true
pickupSum: Same as deliverySum, but eventType is 'sightingPickup'
rejectedSum: A sum over events for the day, where the positionId is 4000
acceptedSum: Same as rejectedSum, but positionId is 3000
So, one line should show the sums for the given day over the different criteria.
I'm fairly well read in SQL, but my experience is quite low, which lead to me asking here.
Any help would be appreciated

Answer 1

SQL Server has neither timestamps nor booleans, so I'll answer this for MySQL.
select date(date),
sum( e.eventtype = 'sightingDelivered' and l.clinic) as deliverySum,
sum( e.eventtype = 'sightingPickup' and l.clinic) as pickupSum,
sum( e.position_id = 4000 ) as rejectedSum,
sum( e.position_id = 3000 ) as acceptedSum
from event e left join
location l
on e.position_id = l.id
where date >= $date1 and date < $date2 + interval 1 day
group by date(date);