常用查询:
// WHERE admin_id >= 10 LIMIT 0,10
User::find()->select('*')->where(['>=', 'admin_id', 10])->offset(0)->limit(10)->all()
// SELECT `id`, (SELECT COUNT(*) FROM `user`) AS `count` FROM `post`
$subQuery = (new Query())->select('COUNT(*)')->from('user');
$query = (new Query())->select(['id', 'count' => $subQuery])->from('post');
// SELECT DISTINCT `user_id` ...
User::find()->select('user_id')->distinct();
更新:
//update();
//runValidation boolen 是否通过validate()校验字段 默认为true
//attributeNames array 需要更新的字段
$model->update($runValidation , $attributeNames);
//updateAll();
//update customer set status = 1 where status = 2
Customer::updateAll(['status' => 1], 'status = 2');
//update customer set status = 1 where status = 2 and uid = 1;
Customer::updateAll(['status' => 1], ['status'=> '2','uid'=>'1']);
删除:
$model = Customer::findOne($id);
$model->delete();
$model->deleteAll(['id'=>1]);
批量插入:
Yii::$app->db->createCommand()->batchInsert(UserModel::tableName(), ['user_id','username'], [
['1','test1'],
['2','test2'],
['3','test3'],
])->execute();
查看执行sql
//UserModel
$query = UserModel::find()->where(['status'=>1]);
echo $query->createCommand()->getRawSql();