When duplicate column names exist in a database and you need to indicate the column to which you are referring?

When duplicate column names exist in a database, you can specify the column by using table aliases or fully qualifying the column name with the table name. For example, if both tables have a column named "id," you can refer to it as "table1.id" or "table2.id." This approach ensures clarity and prevents ambiguity in your queries. Additionally, using aliases in your SQL queries can help make the code more readable.