Yii2 is a high-performance component-based PHP framework. Using Yii2 can conveniently operate the database. Below we introduce the method of yii2 to obtain the current SQL statement. We hope it will be helpful to students who are learning the yii framework!
How does yii2 obtain the sql statement?
When we use YII2 to develop a project, we will check the currently executed SQL statement to troubleshoot errors. So how does YII2 obtain the current SQL statement?
We can use getRawSql() to obtain the current sql statement. The usage examples are as follows:
舉例：UserModel $query = UserModel::find()->where(['status'=>1]); echo $query->createCommand()->getRawSql();
Knowledge supplement
yii2 Use createCommand() to add, delete, modify and check
Query a single piece of data
$sql = "SELECT `name` FROM `table` WHERE id='7'"; $users=Yii::$app->db->createCommand($sql)->queryOne();
Query multiple pieces of data
$sql = "SELECT `name` FROM `table` WHERE name='$name'"; $users=Yii::$app->db->createCommand($sql)->queryAll();
Modify data
Yii::$app->db->createCommand()->update('table', ['name' => $name], "id = {$id}")->execute();
//update 第一個(gè)參數(shù):表名 第二個(gè)參數(shù) :要修改為的數(shù)據(jù) 第三個(gè)數(shù)據(jù):修改條件Add data
Yii::$app->db->createCommand()->insert("table",array("name"=>'zhangsan',"age"=>'18'));
//insert 第一個(gè)參數(shù):表名 第二個(gè)參數(shù) :要添加的數(shù)據(jù)Delete data
Yii::$app->db->createCommand()->delete('table', 'age = 30')->execute(); //delete 第一個(gè)參數(shù):表名 第二個(gè)參數(shù) :刪除的條件
Recommended related articles and tutorials: yii tutorial
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