Question

我有一个PHP脚本，我需要变成一个MySQL程序。我无法运行PHP脚本，因为这必须由MySQL触发器执行。因为我不知道如何在所有MySQL中解决这个问题，所以我用PHP编写了它。

下面的PHP脚本需要更改为MySQL过程。 25和http://www.someurl.com/是从触发器填充的变量（new.order_id / new.store_url）：

$query = "SELECT
            oc_order_product.quantity,
            oc_order_option.option_value_id,
            product.id
          FROM oc_order_product
            JOIN oc_order_option
              ON oc_order_option.order_id = oc_order_product.order_id
            JOIN product
              ON product.oc_product_id = oc_order_product.model
          WHERE oc_order_product.order_id = '25' AND oc_order_product.store_url = 'http://www.someurl.com/'";

$result = $mysqli->query($query);
while($row = $result->fetch_object()){
  $query = "UPDATE product_option_value SET quantity = quantity - {$row->quantity} WHERE product_id='{$row->id}' AND option_value_id='{$row->option_value_id}'";
  $mysqli->query($query);
}

Answer 1

Oke，我在阅读互联网后找到了自己的答案，做了一些追踪和错误。

我创建了一个存储过程，我将在更新触发器上执行。

触发器

CREATE TRIGGER `order_gereed` AFTER UPDATE ON `oc_order`
 FOR EACH ROW IF new.order_status_id = "15"
THEN
CALL VooraadUpdate(new.order_id, new.store_url);
UPDATE push_voorraad SET actie = '1';
END IF

程序

CREATE DEFINER=`root`@`localhost` PROCEDURE `VooraadUpdate`(IN `orderID` INT(11), IN `storeURL` VARCHAR(255))
    NO SQL
BEGIN
    DECLARE done INT DEFAULT FALSE;
    DECLARE a, b, c INT;
    DECLARE cur1 CURSOR FOR SELECT
                              oc_order_product.quantity,
                              oc_order_option.option_value_id,
                              product.id
                            FROM oc_order_product
                              JOIN oc_order_option
                                ON oc_order_option.order_id = oc_order_product.order_id
                              JOIN product
                                ON product.oc_product_id = oc_order_product.model
                            WHERE oc_order_product.order_id = orderID AND oc_order_product.store_url = storeURL;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

    OPEN cur1;
    read_loop: LOOP
      FETCH cur1 INTO a, b, c;
        IF done THEN
          LEAVE read_loop;
        END IF;

      UPDATE product_option_value SET quantity = quantity - a WHERE product_id=c AND option_value_id=b;

    END LOOP;

    CLOSE cur1;
END

将PHP脚本转换为MySQL过程

1 个答案: