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Hi,

I have 5 tables..a.b,c,d,e
While doing equi join :
1)a.id=b.id,
b.id=c.id,
c.id=d.id,
d.id=e.id
a.id=c.id,
a.id=d.id
b.id=d.id

How internally equi join works.should i need all PK to Join
Could you suggest me some tutorial which shows how internally works.

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