Yii2 中常用的增删改查操作总结

一、新增

1、使用save()

$model = new ur();$model->name = 'test';$model->phone = '13000000000';$model->email = '123456@qq.com';$model->save();

2、使用createcommand 原生sql

$sql = "inrt into ur (name, phone, email) values ('test', '13000000000', '123456@qq.com')";yii::$app->db->createcommand($sql)->execute();

3、使用createcommand inrt

yii::$app->db->createcommand()->inrt('ur', [    'name' => 'test',    'phone' => '13000000000',    'email' => '123456@qq.com'])->execute();

4、批量插入

yii::$app->db->createcommand()->batchinrt('ur', ['name', 'phone', 'email'], [    ['test1', '13000000000', '123456@qq.com'],    ['test2', '13000000001', '234567@qq.com']])->execute();

二、删除

1、使用delete()

怏怏不乐的读音$ur = ur::find()->where(['name' => 'test'])->one();$ur->delete();

2、使用deleteall()批量删除

ur::deleteall(['name' => 'test']);

3、使用createcommand delete()

yii::$app->db->createcomma市场营销就业前景nd()->delete('ur', ['name' => 'test'])->execute();

4、使用createcommand 原生sql

$sql = "delete from ur where name = 'test'";yii::$app->db->createcommand($sql)->execute();

三、更新

1、使用update()

$ur = ur::find()->where(['name' => 'test'])->one();$ur->phone = '13100000000';$ur->update();  // 或者 $ur->save();

2、使用updateall()

ur::updateall(['phone' => '13100000000'], ['name' => 'test']);

3、使用createcommand update()

yii::$app->db->createcommand()->update('ur', ['phone' => '13100000000'], ['name' => 'test'])->11月13日是什么星座;execute();

4、使用createcommand 原生sql

$sql = "update ur t phone = '13100000000' wh高中数学教育论文ere name = 'test'";yii::$app->db->createcommand($sql)->execute();

四、查询

1、使用model

// 查询一条记录ur::find()->lect(['name', 'phone', 'email'])->where(['phone' => '13000000000'])->andwhere(['like', 'name', 'test'])->one();// 查询一条记录数组返回ur::find()->where(['name' => 'test'])->asarray()->one();// 查询所有记录ur::find()->where(['name' => 'test'])->all();// 查询所有记录数组返回ur::find()->where(['name' => 'test'])->asarray()->all();

2、使用createcommand

// 查询一人工智能技术应用条记录yii::$app->db->createcommand("lect * from ur where name = :name and phone = :phone")->bindvalues([':name' => 'test', ':phone' => '13000000000'])->queryone();// 查询所有记录yii::$app->db->createcommand("lect * from ur where name = :name and phone = :phone")->bindvalues([':name' => 'test', ':phone' => '13000000000'])->queryall();

3、使用yii\db\query()

(new \yii\db\query())->from('ur')->where(['name' => 'test'])->all();

4、子查询

$subquery = (new \yii\db\query())->lect(['id'])->from('ur')->where(['like', 'name', 'test'])->all();(new \yii\db\query())->from('ur')->where(['in', 'id', $subquery])->all();