Manipulating Table Data






Manipulating Table Data

Since you've practiced executing a few SQL commands that manipulate database objects, you're ready to work with the data in your tables.

Adding Data

Naturally, you'll need to add rows to your tables. To add a purchase to your new purchases table, you'll use an INSERT statement in your query. Figure shows how this is done.

Using a predefined INSERT statement in insert.php

<?php
require_once('db_login.php');
require_once('DB.php');
$connection = DB::connect("mysql://$db_username:$db_password@$db_host/$db_database");
if (DB::isError($connection)){
die ("Could not connect to the database: <br />". DB::errorMessage($connection));
}
$query = "INSERT INTO `purchases` VALUES (NULL,'mdavis',2,NULL)";
$result = $connection->query($query);
if (DB::isError($result)){
die("Could not query the database: <br />". $query." ".DB::errorMessage($result));
}
echo "Inserted successfully!";
$connection->disconnect();
?>

When you call up insert.php, in your browser, you get:

Inserted successfully!

Figure shows that the new row made it to the database by selecting all rows from purchases.

Validating that our new row is in the database




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