Question

I want to store events in table with datetime and need to return the events count based on user request like hourly, daily, monthly etc.

so i am thinking of two designs

tbEvents

eventDate datetime, eventId int

tbEvents

year int, month int, day int, hour int, eventId int

Since I want to groupBy like (year)/(year, month)/(year, month, day) in different queries, I want a optimum table design. Please help me to choose.

Answer 1

a single datetime entry is almost certainly the right choice (unless you are on some obscure db)

you cn always parse that with built in sql functions at query time.