filter for selected record - mysql

Question

I selected a product and then I have this product in a table, when I want to select other product I have to filter the suggestion of the products it should show the options without the product to add to the table. But I dont know how, if you know an option or an idea I'd appreciate it.
query:
$Input = $request->key;
$almacenOrigen = $request->almacenOrigen;
$lengthSku = 16;
$Sku = substr($Input, 0, $lengthSku);
$name = DB::table('products')
->leftJoin('line_products', 'products.lineProduct_id', '=', 'line_products.id')
->leftJoin('inventories', 'products.id', '=', 'inventories.product_id')
->leftJoin('warehouses', 'inventories.warehouse_id', '=', 'warehouses.id')
->where('inventories.status_id', 1)
->where('products.sku', $Sku)
->where('warehouses.id', $almacenOrigen)
->whereNull('products.deleted_at')
->select(
'products.sku',
'products.reference',
'products.id',
'products.name as nameP',
'line_products.skuLength',
'line_products.expirationLength',
'line_products.lotLength',
'line_products.traceabilityLength',
'line_products.name as nameL',
'inventories.lot',
'inventories.warehouse_id',
'inventories.id as inventory_id',
'inventories.traceability'
)
->get();
$html = '';
if (!empty($name)) {
$Expiration = substr($Input, $name[0]->skuLength, $name[0]->expirationLength);
$yearToday = substr(Carbon::now(), 0, 2);
$year = $yearToday . substr($Expiration, 2, 2);
$month = substr($Expiration, 4, 2);
$day = substr($Expiration, 6, 2);
$Expiration = $year . '-' . $month . '-' . $day;
$Lot = substr($Input, $name[0]->skuLength + $name[0]->expirationLength, $name[0]->lotLength);
$Lot = substr($Lot, 2);
$Traceability = substr($Input, $name[0]->skuLength + $name[0]->expirationLength + $name[0]->lotLength, $name[0]->traceabilityLength);
$Traceability = substr($Traceability, 2);
foreach ($name as $value) {
$html .= '
<div>
<a style="color: #000000" class="suggest-element" exist="1" inventory_id="'.($value->inventory_id).'" lot="'.($value->lot).'" warehouse_id="'.($value->warehouse_id).'" "'
. '" sku="' . ($value->sku)
. '" reference="' . ($value->reference)
. '" caducidad="' . ($Expiration)
. '" lote="' . ($Lot)
. '" trazabilidad="' . ($Traceability)
. '" nameL="' . ($value->nameL)
. '" nameP="' . ($value->nameP)
. '" data="' . ($value->sku . $Expiration . $Lot . $Traceability)
. '" id="' . $value->id . '">'
. ($value->inventory_id . "-" .$value->sku .$Expiration . $Lot . $Traceability ) .
'</a>
</div>'
;
Example:
This are the suggestions, if I select id = 1 this is added in a table then when I want to select another the id=1 have not to appear.
|id |---- sku ----|
| 1 |108888893024899|
| 2 |108888893024896|
| 3 |108888893024895|