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People also ask, how does natural join differ from inner join?

A Natural Join is where 2 tables are joined on the basis of all common columns. A Inner Join is where 2 tables are joined on the basis of common columns mentioned in the ON clause. The difference is in natural join no need to specify condition but in inner join condition is obligatory.

Similarly, what is the difference between natural join and theta join? A theta join allows for arbitrary comparison relationships (such as ≥). An equijoin is a theta join using the equality operator. A natural join is an equijoin on attributes that have the same name in each relationship.

People also ask, what is difference between inner join and outer join?

Both inner and outer joins are used to combine rows from two or more tables into a single result. This is done using a join condition. The join condition specifies how columns from each table are matched to one another. Inner joins don't include non-matching rows; whereas, outer joins do include them.

What is a natural join SQL?

A NATURAL JOIN is a JOIN operation that creates an implicit join clause for you based on the common columns of the two tables that are being joined. Common columns are columns that have the same name in both the tables. A NATURAL JOIN can be an INNER join, a LEFT OUTER join, or a RIGHT OUTER join.