Jump to: navigation, search

PHP MySQL Query Multiple Records

From w3cyberlearnings

Contents

PHP MySQL Select All Records

Select all records from a table in a single query can be very memory consuming. In order to select all records in a table can be very easy. You call the SELECT Statement without using the WHERE Statement.

Syntax

$sel_query = 'SELECT first_name, last_name FROM student';

$result = mysql_query($sel_query, $connection) 
               or die(mysql_error($connection));
echo '<table border="1">';
echo '<tr><th>First Name</th><th>Last Name</th></tr>';
while ($row = mysql_fetch_assoc($result)) {
	echo '<tr>';
	foreach ($row as $value) {
		echo '<td>' . $value . '</td>';
	}
	echo "</tr>";
}
echo '</table>';

Note

Select all records at once can be very bad for your server memory, and it can be very slow. You can use Pagination for solution.

Example 1

<?php

define('HOST', 'localhost');
define('USER', 'root');
define('PASS', 'yeething');
define('DBNAME', 'woowood');

$connection = mysql_connect(HOST, USER, PASS);

if (!$connection) {
	die("can not connect to the server!<br/>");
} else {

	$rdb = mysql_select_db(DBNAME);
	if (!$rdb) {
		die("The " . DBNAME . "database could not be selected");
	} else {
		$sel_query = 'SELECT first_name, last_name FROM student';

		$result = mysql_query($sel_query, $connection) 
                    or die(mysql_error($connection));
		echo '<table border="1">';
		echo '<tr><th>First Name</th><th>Last Name</th></tr>';
		while ($row = mysql_fetch_assoc($result)) {
			echo '<tr>';
			foreach ($row as $value) {
				echo '<td>' . $value . '</td>';
			}
			echo "</tr>";
		}
		echo '</table>';
	}
}
mysql_close($connection);
?> 

Output

Php mysql multiple query 1.png

Related Links


  1. MySQL Connect
  2. Create Database
  3. Connect to Database
  4. Delete Database
  5. Create Table
  6. Insert Record
  7. Insert From Array
  8. Insert From File
  9. Update Record
  10. Query Single Record
  11. Query Multiple Records
  12. Query Uses LIMIT
  13. Query Uses ORDER BY
  14. Delete Table
  1. Create Two Tables for this section tutorial
  2. Query Uses AND Operator
  3. Query Uses OR Operator
  4. Query Uses INNER JOIN
  5. Query Uses LEFT OUTER JOIN
  6. Query Uses RIGHT OUTER JOIN
  7. Query with Subquery
  1. MySQL Aggregate Count
  2. MySQL Aggregate SUM
  3. MySQL Aggregate MAX
  4. MySQL Aggregate MIN
  5. MySQL Aggregate AVG
  6. MySQL Query Uses GROUP BY
  7. MySQL Query Uses Having
  1. PHP MySQL Create Date
  2. PHP MySQL Insert Date
  3. PHP MySQL Query Date
Navigation
Web
SQL
MISC
References