How do I join these or union these

Question

I have these tables:

client

• idclient
• name
• reference

address

• idaddress
• idclient

inv

• idinvoice
• idaddress
• datetime
• total

payment

• idpayment
• idinvoice
• pdatetime
• amount

into - name, reference, time, idpayment, idinvoice, amount

i.e. datetime and pdatetime as time. inv.total as negative amount. Where idaddress = 9

Answer 1

OK, I'm making quite a few assumptions about what you're asking, but it looks like you are going for this:

select
    c.name
    , c.reference
    , c.pdatetime as time
    , p.idpayment
    , i.idinvoice
    , p.amount
from
    payment p
    inner join inv i
        on p.idinvoice = i.idinvoice
    inner join address a
        on i.idaddress = a.idaddress
    inner join client c
        on a.idclient = c.idclient

add whatever filtering you need in a where clause