MySQL less than or equal operator

Last update on April 04 2022 13:09:21 (UTC/GMT +8 hours)

less than or equal operator

MySQL less than or equal operator checks whether an expression is either less than or equal to another expression.

Syntax:

<=

MySQL Version : 5.6

Example:

The following MySQL statement will fetch those publishers from the publisher table who have less than or equal to 6 branch offices.

Code:

SELECT pub_name,country,pub_city,no_of_branch
FROM publisher       
WHERE no_of_branch<=6;

Relational Algebra Expression:

Relational Algebra Tree:

Sample table: publisher

Sample Output:

mysql> SELECT pub_name,country,pub_city,no_of_branch
    -> FROM publisher       
    -> WHERE no_of_branch<=6;
+------------------------------+-----------+-----------+--------------+
| pub_name                     | country   | pub_city  | no_of_branch |
+------------------------------+-----------+-----------+--------------+
| New Harrold Publication      | Australia | Adelaide  |            6 | 
| Pieterson Grp. of Publishers | UK        | Cambridge |            6 | 
+------------------------------+-----------+-----------+--------------+
2 rows in set (0.02 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-less-than-or-equal-operator- php MySQL examples | w3resource</title>
<meta name="description" content="example-less-than-or-equal-operator- 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>List of publishers whose number of branches are six or less, along with their country, city and number of branches:</h2>
<table class='table table-bordered'>
<tr>
<th>Publisher</th><th>Country</th><th>City</th><th>Number of branches</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 pub_name,country,pub_city,no_of_branch
FROM publisher
WHERE no_of_branch<=6') as $row) {
echo "<tr>";
echo "<td>" . $row['pub_name'] . "</td>";
echo "<td>" . $row['country'] . "</td>";
echo "<td>" . $row['pub_city'] . "</td>";
echo "<td>" . $row['no_of_branch'] . "</td>";
echo "</tr>"; 
}
?>
</tbody></table>
</div>
</div>
</div>
</body>
</html>

View the example in browser

JSP script:

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>example-less-than-or-equal-operator</title>
</head>
<body>
<%
try {
Class.forName("com.MySQL.jdbc.Driver").newInstance();
String Host = "jdbc:MySQL://localhost:3306/w3resour_bookinfo";
Connection connection = null;
Statement statement = null;
ResultSet rs = null;
connection = DriverManager.getConnection(Host, "root", "datasoft123");
statement = connection.createStatement();
String Data ="SELECT pub_name,country,pub_city,no_of_branch FROM publisher WHERE no_of_branch<=6";
rs = statement.executeQuery(Data);
%>
<TABLE border="1">
<tr width="10" bgcolor="#9979">
<td>Publisher</td>
<td>Country</td>
<td>City</td>
<td>Number of branches</td>
</tr>
<%
while (rs.next()) {
%>
<TR>
<TD><%=rs.getString("pub_name")%></TD>
<TD><%=rs.getString("country")%></TD>
<TD><%=rs.getString("pub_city")%></TD>
<TD><%=rs.getString("no_of_branch")%></TD>
</TR>
<%   }    %>
</table>
<%
rs.close();
statement.close();
connection.close();
} catch (Exception ex) {
out.println("Can’t connect to database.");
}
%>
</body>
</html>

Online Practice Editor:

Slideshow of MySQL Comparison Function and Operators

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