What best practices should be followed when writing a SELECT statement in PHP to ensure all records are retrieved?

When writing a SELECT statement in PHP to retrieve all records from a database, it is important to avoid using a LIMIT clause or specifying a specific range of records to fetch. To ensure all records are retrieved, simply omit the LIMIT clause altogether in the SQL query. 

// Establish a connection to the database
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// SQL query to retrieve all records from a table
$sql = "SELECT * FROM table_name";

// Execute the query
$result = $conn->query($sql);

// Check if there are any records returned
if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "Column1: " . $row["column1"]. " - Column2: " . $row["column2"]. "<br>";
    }
} else {
    echo "0 results";
}

// Close the connection
$conn->close();

Keywords

SQL SELECT statement PHP database data retrieval

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