Oracle Anti JoinAnti-join is used to make the queries run faster. It is a very powerful SQL construct Oracle offers for faster queries. Anti-join between two tables returns rows from the first table where no matches are found in the second table. It is opposite of a semi-join. An anti-join returns one copy of each row in the first table for which no match is found. Anti-joins are written using the NOT EXISTS or NOT IN constructs. Example Let's take two tables "departments" and "customer" Departments table Customer table Execute this query Output Next TopicOracle Semi Join |