CODEWITHSUNDEEP
phpmysql
Marcel Wasilewski
Marcel Wasilewski

Reputation: 2679

sql query shows every result 3 times and not only once

I got a sql table containing a string that i need to join in another table. First i got the string from the SQL table:

$sql = "Select coupons.restrict_to_products From coupons Where coupons.coupon_id = 2";
$result = mysql_query($sql);
$row = mysql_fetch_row($result);
$array2=implode(",", $row);

So if I now echo $array2it shows me "42, 43, 73" which is what i needed. Now i am trying to join another table with the result like this:

$query = mysql_query("SELECT products_name FROM products_description WHERE products_id IN ($array2)");
while ($row2 = mysql_fetch_assoc($query)) {
    $array3=implode(",", $row2);
    echo $array3."<br>";
}

The code works but for some reason it shows me every productname 3 times and not only once. The result of the echo is:

Productname 1
Productname 1
Productname 1
Productname 2
Productname 2
Productname 2
Productname 3
Productname 3
Productname 3

What am I missing?

Upvotes: 0

Views: 93

Answers (4)

user5051310
user5051310

Reputation:

Or if the rows aren't duplicate, you can grab all the names associated with those ids

SELECT products_id,GROUP_CONCAT(products_name) AS products_names
FROM products_description
WHERE products_id IN ($array)
GROUP BY products_id

Upvotes: 0

Ninju
Ninju

Reputation: 2522

Use this

$query = mysql_query("SELECT DISTINCT(products_name) FROM products_description WHERE products_id IN ($array2) ");
while ($row2 = mysql_fetch_assoc($query)) {
    $array3=implode(",", $row2);
    echo $array3."<br>";
}

OR

$query = mysql_query("SELECT products_name FROM products_description WHERE products_id IN ($array2) group by products_id ");

Upvotes: 0

Sougata Bose
Sougata Bose

Reputation: 31749

The coupons might have applied to same products so it is returning 3 times the same product. Try to group the products by id which would be unique. Try - 

SELECT products_name 
FROM products_description 
WHERE products_id IN ($array2) 
GROUP BY products_id

Upvotes: 1

Abhishek Sharma
Abhishek Sharma

Reputation: 6661

use group by 

group by Productname

or you can try distinct

Upvotes: 1

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