What are the joins,types of joins and thier functions?
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Answer Posted / rus
There are three types of joins:
1. Cartesian Join
2. Inner Join
3. Outer Join
Cartesian Join gives the records for all the combinations
of both the datasets
Inner Join gives only the matching records from both the
datasets
outer join is of three types:
Left Join
Right Join
Self Join
Left Join gives both matched and unmatched records from the
left table/dataset
Right join gives both matched and unmatched records from
the right table/dataset
self join gives matching or unmatched records from the same
table based on the condition
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