Distinct values of two queries - mysql

Question

I need to filter duplicates, but union is displaying duplicates.
For example Query-1 is displaying 5 tuples like 1,2,3,4,5.
Query-2 generating 3 tuples like 1,2,6.
Union of both the tuples displaying result 1,2,3,4,5,1,2,6.
But I want the result as 1,2,3,4,5,6.
Here is my controller :
public function product()
{
$product = $this->input->post('keyword');
$temp = explode(" ", $product);
$count = count($temp);
for($i=0;$i<$count;$i++)
{
$query = "SELECT * FROM `product` WHERE SOUNDEX(`name`) LIKE CONCAT('%',SOUNDEX('$temp[$i]'),'%') UNION SELECT * FROM `product` WHERE `name` like '%$temp[$i]%'";
$data = $this->Back_model->getby_query($query);
$records = json_encode($data);
echo $records;
}
}

Answer 1

There is no apparent reason for using 2 select queries, the second filter may be added to an existing where clause
SELECT *
FROM `product`
WHERE SOUNDEX(`name`) LIKE CONCAT('%',SOUNDEX('$temp[$i]'),'%')
AND `name` like '%$temp[$i]%'";

Answer 2

First of all, I would probably do this in another scripting language, but if you really want to do this in MySQL, you need to use DISTINCT. You should query the data and put it in a temp table, and from the temp table query the DISTINCT values. Once you're done you can drop the temp table. For an operation this small, not sure if this is what I would do, but if you say that you have thousands of records/values that need to be filtered, than it might be worth it.