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                ['between', 'id', 1, 10] 將會生成 id BETWEEN 1 AND 10~~~ 查詢多條 $posts = Yii::$app->db->createCommand('SELECT * FROM post') ->queryAll(); 查詢一條 $post = Yii::$app->db->createCommand('SELECT * FROM post WHERE id=1')->queryOne(); 返回一列 $titles = Yii::$app->db->createCommand('SELECT title FROM post') ->queryColumn(); 返回標量 $count = Yii::$app->db->createCommand('SELECT COUNT(*) FROM post') ->queryScalar(); 綁定參數 $post = Yii::$app->db->createCommand('SELECT * FROM post WHERE id=:id AND status=:status') ->bindValue(':id', $_GET['id']) ->bindValue(':status', 1) ->queryOne(); 非查詢 Yii::$app->db->createCommand('UPDATE post SET status=1 WHERE id=1') ->execute(); Yii::$app->db->createCommand()->insert('user', [ 'name' => 'Sam', 'age' => 30, ])->execute(); Yii::$app->db->createCommand()->update('user', ['status' => 1], 'age > 30')->execute(); Yii::$app->db->createCommand()->delete('user', 'status = 0')->execute(); ~~~ 生成器 ~~~ $query->select(['id', 'email']); $subQuery = (new Query())->select('COUNT(*)')->from('user'); $query->select('user_id')->distinct();//去重復 $query->from(['u' => 'public.user', 'p' => 'public.post']);多表 $query->where('status=:status', [':status' => $status]); $query->where('status=1'); $query->where([ 'status' => 10, 'type' => null, 'id' => [4, 8, 15], ]); ['and', 'id=1', 'id=2'] ['or', 'id=1', 'id=2'] ['between', 'id', 1, 10] 將會生成 id BETWEEN 1 AND 10 ['in', 'id', [1, 2, 3]] 將生成 id IN (1, 2, 3) ['like', 'name', 'tester'] 會生成 name LIKE '%tester%' ['>', 'age', 10] 將會生成 age>10 $query->orderBy('id ASC, name DESC'); $query->groupBy('id, status'); $query->limit(10)->offset(20); // ... LEFT JOIN `post` ON `post`.`user_id` = `user`.`id` $query->join('LEFT JOIN', 'post', 'post.user_id = user.id'); all():將返回一個由行組成的數組,每一行是一個由名稱和值構成的關聯數組(譯者注:省略鍵的數組稱為索引數組)。 one():返回結果集的第一行。 column():返回結果集的第一列。 scalar():返回結果集的第一行第一列的標量值。 exists():返回一個表示該查詢是否包結果集的值。 count():返回 COUNT 查詢的結果 ~~~
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