How to bulk add a price to all products in the infoblock in Bitrix?

Question

1C-Bitrix

Hey! I have an infoblock with product sections. The task is to add (do not change, there is no price at all) the same price (BASE) to all products in each category of the given infoblock. In order not to do it manually for hundreds of positions.
How can I do that?
I see that there is the following CPrice::Add method , but since Bitrix is ​​something completely new for me, I don’t know how to adapt it to the entire product catalog.
Maybe it's generally a SQL query can be done?
Let's say to make everyone the price of 1 rub.

Answer 1

Do it yourself, I'm on mobile.
You can also omit CPrice::GetList with an update or take it out of the loop, having previously collected the element IDs.
If there are many elements, then split the execution into parts, or the 4th parameter nPageSize, iNumPage. or read IDs once into session/file,

$PRICE_TYPE_ID = 1;
$IBLOCK_ID = 8;


$res = CIBlockElement::GetList([], ["IBLOCK_ID" => $IBLOCK_ID], false, false, ["ID"]);
while ($item = $res->Fetch())
{
$PRODUCT_ID = $item["ID"];
$arFields = Array(
    "PRODUCT_ID" => $PRODUCT_ID,
    "CATALOG_GROUP_ID" => $PRICE_TYPE_ID,
    "PRICE" => 1,
    "CURRENCY" => "RUB",
);

$res = CPrice::GetList(
        array(),
        array(
                "PRODUCT_ID" => $PRODUCT_ID,
                "CATALOG_GROUP_ID" => $PRICE_TYPE_ID
            )
    );

if ($arr = $res->Fetch())
{
    CPrice::Update($arr["ID"], $arFields);
}
else
{
    CPrice::Add($arFields);
}
}