Is the use of the 'Limit 1' clause in the MySQL query a best practice for this scenario?

The 'Limit 1' clause in a MySQL query is a best practice when you want to ensure that only one result is returned, especially when you are querying for a specific record or when you know there should only be one matching result. This can help improve performance and prevent unnecessary data retrieval. 

<?php
// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

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

// Query with 'Limit 1' clause
$sql = "SELECT * FROM table_name WHERE column_name = 'value' LIMIT 1";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
  // Output data of the first (and only) row
  $row = $result->fetch_assoc();
  echo "ID: " . $row["id"]. " - Name: " . $row["name"];
} else {
  echo "0 results";
}

$conn->close();
?>

Keywords

MySQL query optimization performance LIMIT clause PHP

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