Yii2 中常用的增删改查操作总结

 

一、新增

1、使用save()

$model = new user();
$model->name = 'test';
$model->phone = '13000000000';
$model->email = '[e-mail]';
$model->save();

2、使用createcommand 原生sql

$sql = "insert into user (name, phone, email) values ('test', '13000000000', '[e-mail]')";
yii::$app->db->createcommand($sql)->execute();

3、使用createcommand insert

yii::$app->db->createcommand()->insert('user', [
    'name' => 'test',
    'phone' => '13000000000',
    'email' => '[e-mail]'
])->execute();

4、批量插入

yii::$app->db->createcommand()->batchinsert('user', ['name', 'phone', 'email'], [
    ['test1', '13000000000', '[e-mail]'],
    ['test2', '13000000001', '[e-mail]']
])->execute();

 

二、删除

1、使用delete()

$user = user::find()->where(['name' => 'test'])->one();
$user->delete();

2、使用deleteall()批量删除

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

3、使用createcommand delete()

yii::$app->db->createcommand()->delete('user', ['name' => 'test'])->execute();

4、使用createcommand 原生sql

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

 

三、更新

1、使用update()

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

2、使用updateall()

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

3、使用createcommand update()

yii::$app->db->createcommand()->update('user', ['phone' => '13100000000'], ['name' => 'test'])->execute();

4、使用createcommand 原生sql

$sql = "update user set phone = '13100000000' where name = 'test'";
yii::$app->db->createcommand($sql)->execute();

 

四、查询

1、使用model

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

2、使用createcommand

// 查询一条记录
yii::$app->db->createcommand("select * from user where name = :name and phone = :phone")->bindvalues([':name' => 'test', ':phone' => '13000000000'])->queryone();
// 查询所有记录
yii::$app->db->createcommand("select * from user where name = :name and phone = :phone")->bindvalues([':name' => 'test', ':phone' => '13000000000'])->queryall();

3、使用yii\db\query()

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

4、子查询

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