Showing me only one result? - php

Question

I have two tables in my database these are:
customer
product
customer table:
customerID
sl_no(pk)
name
email
phone
product table:
product_id(pk)
sl_no(fk)
product
price
When i run this query it shows me only one result:
$sql = (" SELECT * FROM customer INNER JOIN product WHERE customer. sl_no LIKE '%$search%' OR product. sl_no LIKE '%$search%'");

Answer 1

Your sql query will at some point return an error of being ambiguous or column with name, product not found. I have added aliases in the SQL query. If you do not understand. You can read up from here. https://www.w3schools.com/sql/sql_alias.asp
If you
Also try using mysqli because mysql is been deprecated as of PHP
5.5.0
$servername = "yourhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = (" SELECT customer.name AS name, customer.email AS email, customer.phone AS phone, product.product AS product_name, product.price AS price FROM customer, product WHERE customer.sl_no = product.sl_no AND customer. sl_no LIKE '%$search%' OR product. sl_no LIKE '%$search%' ");
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
echo "<strong>CUSTOMER</strong>";
echo "Customer Name: " . $row["name"]."<br>";
echo "Customer email: " . $row["email"]."<br>";
echo "Customer phone: " . $row["phone"]."<br>";
echo "----";
echo "<strong>PRODUCT</strong>";
echo "Product Name: " . $row["product_name"]."<br>";
echo "Product Price: " . $row["price"]."<br>";
echo "-----";
echo "----";
}
} else {
echo "0 results";
}
$conn->close();
Don't forget to first test or run query in the database via your
UI/phpmyadmin or CLI to understand what result you should expect.
Hope this helps.

Answer 2

You may have several issues. As we can't see the Php iteration of the results.... here's some issues with the basic select...
Missing on clause (or change your inner join to a cross join) so your meaning is clear.
The OR in the clause or doesn't make sense if it's an inner join given PK/FK nature of the field.
searching using like %var% seems like bad form. Do you know the exact values? if so use them instead of %var% since this method can't use indexes.
your where customer. sl_no has a space... this won't work.
.
$sql = ("SELECT *
FROM customer C
INNER JOIN product P
ON C.sl_no = P.SL_NO
WHERE C.sl_no = '$search'");
If you do really mean like then put the like and %'s back but this seems like bad form. and don't you need . before and after var in php. I'm not a big developer there so maybe I'm thinking of something else.