Question

Can you use more than one column in the USING clause?

Answer 1

Yes, you can use more than one column in the USING clause when joining tables based on the same column name(s).

Step-by-step explanation:

Yes, you can use more than one column in the USING clause. The USING clause is used when joining tables based on the same column name(s). It allows you to specify the common column(s) between the tables without explicitly mentioning them in the SELECT statement.

For example, if you have two tables, table1 and table2, with a common column named id, you can join them using USING (id). This will automatically match the id column from both tables.