MySQL中yii2使用原生sql CURD

更多yii2使用技巧请参考：http://nai8.me/tool-sc.html

批量插入数据：

Yii::$app->db->createCommand()->batchInsert("user", ["email", "password", "first_name"],
[
["james.franklin@example.com", "changeme7", "James"],
["linda.marks@example.com", "changeme7", "Linda"]
["roger.martin@example.com", "changeme7"]
])->execute();

Yii::$app->db->createCommand()->update("user", ["updated_at" => time()], "id = 2")->execute();

Yii::$app->db->createCommand()->delete("user", "id = 3")->execute();

Yii::$app->db->createCommand("SELECT * FROM `user`")->queryAll();

Yii::$app->db->createCommand("SELECT * FROM `user` WHERE id = 1")->queryOne();

Yii::$app->db->createCommand("SELECT count(*) AS total FROM `user` WHERE id = 1")->queryScalar();

Yii::$app->db->createCommand("SELECT username FROM `user`")->queryColumn();