What is the method for performing a join between two tables in Oracle?
In Oracle, you can use the JOIN keyword in SQL statements to perform a combined query on two tables.
For example, suppose we have two tables, A and B, and we want to perform a query that joins them based on a common field. We can use the following syntax.
SELECT A.column1, B.column2
FROM table1 A
JOIN table2 B
ON A.common_column = B.common_column;
In the statement above, table1 and table2 represent the two tables for the join query, common_column is the common field in these two tables, and column1 and column2 are the fields to be queried.
Different types of JOIN can be used, such as INNER JOIN, LEFT JOIN, and RIGHT JOIN, to perform various types of join queries based on specific needs.