What potential pitfalls should PHP developers be aware of when working with multiple tables in a database query to avoid ambiguity issues?

When working with multiple tables in a database query, PHP developers should be aware of potential ambiguity issues that can arise when column names are the same in different tables. To avoid this problem, developers should use table aliases in their queries to explicitly specify which table a column belongs to.

$query = "SELECT t1.column_name, t2.column_name 
          FROM table1 AS t1
          JOIN table2 AS t2 ON t1.id = t2.id";
$result = mysqli_query($connection, $query);