SQL | INTERSECT Clause
The INTERSECT clause in SQL is used to combine two SELECT statements but the dataset returned by the INTERSECT statement will be the intersection of the data-sets of the two SELECT statements. In simple words, the INTERSECT statement will return only those rows which will be common to both of the SELECT statements.
The INTERSECT statement will return only those rows present in the red shaded region. i.e. common to both of the data-sets.
Note: The number and type of fields present in the two data-sets must be same and similar.
SELECT column1 , column2 .... FROM table_names WHERE condition INTERSECT SELECT column1 , column2 .... FROM table_names WHERE condition
SELECT ID, NAME, Amount, Date FROM Customers LEFT JOIN Orders ON Customers.ID = Orders.Customer_id INTERSECT SELECT ID, NAME, Amount, Date FROM Customers RIGHT JOIN Orders ON Customers.ID = Orders.Customer_id;
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