What best practices should be followed when joining tables in MySQL queries in PHP?

When joining tables in MySQL queries in PHP, it is important to use proper table aliases to avoid ambiguity and improve readability. Additionally, always specify the columns you want to select explicitly to prevent unnecessary data retrieval. Lastly, use appropriate join types such as INNER JOIN, LEFT JOIN, or RIGHT JOIN based on the relationship between the tables. 

<?php
// Example of joining tables in MySQL queries in PHP
$query = "SELECT t1.column1, t2.column2
          FROM table1 AS t1
          INNER JOIN table2 AS t2 ON t1.id = t2.id";
$result = mysqli_query($connection, $query);

if($result){
    while($row = mysqli_fetch_assoc($result)){
        // Process the fetched data
    }
} else {
    echo "Error: " . mysqli_error($connection);
}

mysqli_close($connection);
?>

Keywords

MySQL JOIN PHP query optimization indexing

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