Yii框架的SQL
User::find()->all(); //返回所有用戶數據;
User::findOne($id); //返回 主鍵 id=1 的一條數據;
User::find()->where(['name' => 'ttt'])->one(); //返回 ['name' => 'ttt'] 的一條數據;
User::find()->where(['name' => 'ttt'])->all(); //返回 ['name' => 'ttt'] 的所有數據;
User::findBySql('SELECT * FROM user')->all(); //用 sql 語句查詢 user
表裏面的所有數據;
User::findBySql('SELECT * FROM user')->one(); 此方法是用 sql
語句查詢 user 表裏面的一條數據;
User::find()->andWhere(['sex' => '女', 'age' => '18'])->count('id');
統計符合條件的總條數;
User::find()->one();
User::find()->all();
User::find()->count();
User::find()->average();
User::find()->min();
User::find()->max();
User::find()->scalar();
User::find()->column();
User::find()->exists();
查詢操作:
User::find()->where(['name' => 'username'])->one(); 此方法返回 ['name' => 'username'] 的一條數據;
User::find()->where(['name' => 'username'])->all(); 此方法返回 ['name' => 'username'] 的所有數據;
User::find()->andWhere(['sex' => '男', 'age' => '24'])->count('id');
統計符合條件的總條數;
新增操作:
$model = newUser();
$model->username = 'username';
$model->age = '20';
$model->insert();
修改操作:
$User = User::findOne($id);
$User->name = 'zhangsan';
$User->save();
刪除操作:
User::deleteAll('name = username'); 刪除 name = username 的數據;
User::findOne($id)->delete(); 刪除主鍵爲 $id變量 值的數據庫;
User::deleteAll('age > :age AND sex = :sex', [':age' => '20', ':sex' => '1']); 刪除符合條件的數據;