Informatics Practices

What is a join ? How is natural join different from an equi-join ?

SQL Joins & Grouping

1 Like

Answer

A join is a query that combines rows from two or more tables based on a condition.

The join in which only one of the identical columns from the joined tables exists is called a natural join, while the join in which columns are compared for equality is called an equi-join.

Answered By

2 Likes

Related Questions

Assertion. The MINUS and INTERSECT operators are similar.
Reason. The MINUS operator returns only the rows from the first result set while INTERSECT returns the common rows of both the result sets.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
View Answer Bookmark Now

What is Cartesian product ? How is it related to join ?
View Answer Bookmark Now
What is a table alias ? What is the purpose of table alias ?
View Answer Bookmark Now
Define an equi-join. What is non-equi-join ?
View Answer Bookmark Now

Informatics Practices

What is a join ? How is natural join different from an equi-join ?

SQL Joins & Grouping

Answer

Related Questions

What is Cartesian product ? How is it related to join ?

What is a table alias ? What is the purpose of table alias ?

Define an equi-join. What is non-equi-join ?