php - 对 Zend 查询生成器的 SQL 查询(OR、AND、ORDER BY FIELD、IS NULL)

Question

我正在尝试更改我的 SQL 查询:

SELECT link FROM shop_product_videos WHERE brand='Goddess' AND ( prodid='' OR prodid='' OR prodid IS NULL) 
ORDER BY FIELD(prodid='' OR prodid IS NULL, 1, 0), prodid
LIMIT 1 

这是我到目前为止尝试过的:

    $query = $this->select('link')
                  ->from('shop_product_videos')
                  ->where('brand=?', $brand)
                  ->where('prodid=?', $prodid)
                  ->orWhere('prodid=""')
                  ->orWhere('prodid is null')
                  ->order(new Zend_Db_Expr("FIELD(prodid='' OR prodid IS NULL, 1, 0), prodid)"))
                  ->limit(1)
                ;

    return   $this->getAdapter(false)->fetchAll($query); 

但我不断收到错误:

An error occurred

Exception information:

Message: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 2

Answer 1

尝试以这种方式更改您的查询，我修改了顺序中最后一个 prodid 之后的 )，并且我在所有列名称之前设置了表的名称

$query = $this->select('link')
              ->from('shop_product_videos')
              ->where('shop_product_videos.brand=?', $brand)
              ->where('shop_product_videos.prodid=?', $prodid)
              ->orWhere('shop_product_videos.prodid=""')
              ->orWhere('shop_product_videos.prodid is null')
              ->order(new Zend_Db_Expr("FIELD(shop_product_videos.prodid='' OR shop_product_videos.prodid IS NULL, 1, 0), shop_product_videos.prodid"))
              ->limit(1)
            ;