Yii createCommand CURD操作

本文用作工作记录，也许有人会问为什么不用 Yii 的 Model 去操作 DB，原因很简单，Yii 的 Model 写法上是方便了很多，但是会执行多余的 SQL，打开 Yii 的执行 log 就会发现。

打开跟踪log的方法，config/main.php中 log routes 中添加

[
    'class' => 'CWebLogRoute',
]

所以为了效率，为了 DB 服务器的性能考虑，还是使用 createCommand 的好。

insert

$row = Yii::app()->getDb()->createCommand()->insert('goods', array(
            'good_name' => $goods_name,
            'good_type' => $goods_type,
            'price' => $price,
            'buy_nums' => 0,
            'commit_nums' => 0,
            'create_time' => time(),
        ));

select

单表查询

$goodsTypes = Yii::app()->getDb()->createCommand()
        ->select('type_id, type_name')
        ->from('goods_type')
        ->where('status=:status', [
            ':status' => 1
        ])
        ->queryAll();

连表查询

$goods = Yii::app()->getDb()->createCommand()->from('goods g')
        ->select('g.good_id, g.good_name, gt.type_name, g.price, g.buy_nums, g.commit_nums, g.create_time')
        ->join('goods_type gt', 'g.good_type=gt.type_id')
        ->where('g.`status`=:status1 and gt.`status`=:status2', [
            ':status1' => 1,
            ':status2' => 2
        ])
        ->order('g.create_time desc')
        ->queryAll();

delete

$row = Yii::app()->getDb()->createCommand()
        ->delete('goods', "good_id=:good_id", array(
            ':good_id' => $goods_id,
        ));

update

$row = Yii::app()->getDb()->createCommand()->update('goods', [
    'good_name' => $goods_name,
    'good_type' => $goods_type,
    'price' => $price,
        ], "good_id=:good_id", [
    ':good_id' => 1
        ]);