Please list the types of Joins that are used in SQL, Oracle and MYSQL and their advantages and uses. I would also like to know in detail about a scenario in which Right and Left joins are used in the same query.
Is it possible?
Types of Joins that are used in SQL?
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There are three types of joins in SQL, ORACLE and MYSQL:
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1. Inner Join
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In Inner Join two tables are joined together only if they have at least one common column
2. Outer Join
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In Outer Join two tables are joined together irrespective of the fact whether they have common column or not Outer join is classified in three categories:
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Left Outer Join
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The Left Outer Join returns all rows from the left table in query, even if there are no matches in the right table
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Right Outer Join
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The Right Outer Join all the rows from the right table in the query , even if there are no matches in the left table
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  Full Outer Join
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The Full Outer Join return rows when there is a match in one of the tables
3. Self Join
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In self join a table is joined to itself
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