What are the joins,types of joins and thier functions?
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Answer Posted / sree
There are two types of joins
1.Inner joins
2.Outer joins
The outer join is of 3 kinds
- Right join
- Left join
- Full join
Inner join have following characteristics
-return only matching rows
allow max of 32 tables to be joined at the same time
Outer joins--can retrive nonmatching as well as matching
rows.
--outer joins are limited to two tables at a time.
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