In the context of PHP, what are the best practices for handling JOIN queries to avoid duplicate results?

When performing JOIN queries in PHP, it is important to use proper aliasing for column names to avoid duplicate results. By explicitly selecting the columns you need and using unique aliases for columns with the same name in different tables, you can prevent duplicate results in the query output. 

$query = "SELECT table1.id AS table1_id, table2.id AS table2_id, table1.name AS table1_name, table2.name AS table2_name 
          FROM table1 
          INNER JOIN table2 ON table1.id = table2.id";

$result = mysqli_query($connection, $query);

while($row = mysqli_fetch_assoc($result)){
    echo $row['table1_id'] . " - " . $row['table1_name'] . " - " . $row['table2_id'] . " - " . $row['table2_name'] . "<br>";
}

Keywords

JOIN queries PHP SQL duplicate results data manipulation

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