Tuesday, 10 July 2018

Mysql NOT RLIKE operator

Mysql NOT RLIKE operator

MySQL NOT RLIKE operator checks whether a pattern is not present within an expression. The pattern is supplied as an argument.
Syntax:
NOT RLIKE pat
Argument
NameDescription
patA pattern of string.
MySQL Version: 5.6
Example: MySQL NOT RLIKE operator
The following MySQL statement will find the author’s name not beginning with ‘w’ and country not beginning with 'U'. The ‘^’ have been used to match the beginning of the name.
Code:
SELECT * FROM author 
WHERE aut_name NOT RLIKE '^w' 
AND country NOT RLIKE '^U';





Copy
Sample table: author

Sample Output:
mysql> SELECT * FROM author 
    -> WHERE aut_name NOT RLIKE '^w' 
    -> AND country NOT RLIKE '^U';
+--------+----------------------+-----------+----------------+
| aut_id | aut_name             | country   | home_city      |
+--------+----------------------+-----------+----------------+
| AUT004 | S.B.Swaminathan      | India     | Bangalore      | 
| AUT005 | Thomas Morgan        | Germany   | Arnsberg       | 
| AUT009 | Marquis de Ellis     | Brazil    | Rio De Janerio | 
| AUT011 | John Betjeman Hunter | Australia | Sydney         | 
| AUT012 | Evan Hayek           | Canada    | Vancouver      | 
| AUT013 | E. Howard            | Australia | Adelaide       | 
+--------+----------------------+-----------+----------------+
6 rows in set (0.00 sec)
PHP script
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>example-not-rlike-function - php mysql examples | w3resource</title>
<meta name="description" content="example-not-rlike-function - php mysql examples | w3resource">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-12">
<h2>A list of Authors with their id, name country and home city. The list set against a condition, and that is, Author's name should not begin with 'w' and also not with 'U':</h2>
<table class='table table-bordered'>
<tr>
<th>Author's id</th><th>Author's name</th><th>Country</th><th>Home city</th>
</tr>
<?php
$hostname="your_hostname"; 
$username="your_username";
$password="your_password";
$db = "your_dbname";
$dbh = new PDO("mysql:host=$hostname;dbname=$db", $username, $password);
foreach($dbh->query('SELECT *
FROM author
WHERE aut_name NOT RLIKE "^w"
AND country NOT RLIKE "^U"') as $row) {
echo "<tr>";
echo "<td>" . $row['aut_id'] . "</td>";
echo "<td>" . $row['aut_name'] . "</td>";
echo "<td>" . $row['country'] . "</td>";
echo "<td>" . $row['home_city'] . "</td>";
echo "</tr>";
}
?>
</tbody></table>
</div>
</div>
</div>
</body>
</html>

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