What is the correct syntax for checking if a column value is not null in a MySQL query in PHP?

When checking if a column value is not null in a MySQL query in PHP, you can use the IS NOT NULL condition in the WHERE clause. This condition will filter out rows where the specified column has a null value. Make sure to properly concatenate the condition in your query string to ensure it is executed correctly. 

// Assuming $conn is your MySQL database connection

$column = 'column_name';
$query = "SELECT * FROM table_name WHERE $column IS NOT NULL";

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

if(mysqli_num_rows($result) > 0) {
    // Process the results
} else {
    echo "No rows found where $column is not null";
}

Keywords

PHP MySQL syntax column value not null

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