运行两个查询INSERT和INSERT INTO SELECT（php，mysql）

Question

$this->db->query("INSERT INTO products 
                (name, price, description, stock) 
                VALUES ('$name', '$price', '$description', '$stock')");

$this->db->query("INSERT INTO products (category)
                SELECT id
                FROM categories
                WHERE category_name = '$category'");

如果单独运行这些查询，效果很好，但是如何一起运行呢？ 我正在尝试将产品数据添加到表中，还获取类别ID并同时插入它。

Answer 1

通常，您可以在SELECT中指定硬编码值

INSERT INTO table1 (col1, col2, col3)
    SELECT id, 'string1', 'string2'
    FROM table2
    WHERE cond1 = val4;

如果id和string1和string2将值添加到table1

你的情况应该是

INSERT INTO products (category, name, price, description, stock)
                SELECT id, '$name', '$price', '$description', '$stock'
                FROM categories
                WHERE category_name = '$category'