Yii uses DeleteAll to delete a table.

Yii uses DeleteAll to delete a table.

The example in this article describes how to solve an error when using DeleteAll to delete a table. We will share this with you for your reference. The details are as follows:

When deleting data, you will often encounter a connection condition to determine whether to delete the data. Today, we use Yii CDbCriteria to generate a connection condition. Database errors are reported during batch deletion.

The page code is:

$criteria=new CDbCriteria;$criteria->join = ' LEFT JOIN {{positions}} p ON p.zpo_id=t.zpo_id ';$criteria->addCondition("p.zpo_type=1");$criteria->addCondition("t.zpl_content_id in ($id)");PosLog::model()->deleteAll($criteria);

Error SQL:
Copy codeThe Code is as follows: delete from 'zd _ pos_log' left join zd_positions p ON p. zpo_id = t. zpo_id WHERE (p. zpo_type = 1) AND (t. zpl_content_id in (76 ))

The correct SQL statement should be:
Copy codeThe Code is as follows: DELETE t FROM 'zd _ pos_log't left join zd_positions p ON p. zpo_id = t. zpo_id WHERE (p. zpo_type = 1) AND (t. zpl_content_id in (76 ))

Back to Yii base class:

Framework/db/schema/CDbCommandBuilder. php #166

public function createDeleteCommand($table,$criteria){  $this->ensureTable($table);  $sql="DELETE FROM {$table->rawName}";  $sql=$this->applyJoin($sql,$criteria->join);  $sql=$this->applyCondition($sql,$criteria->condition);  $sql=$this->applyGroup($sql,$criteria->group);  $sql=$this->applyHaving($sql,$criteria->having);  $sql=$this->applyOrder($sql,$criteria->order);  $sql=$this->applyLimit($sql,$criteria->limit,$criteria->offset);  $command=$this->_connection->createCommand($sql);  $this->bindValues($command,$criteria->params);  return $command;}

Solution. Modify the base class method:

public function createDeleteCommand($table,$criteria,$alias='t'){  $this->ensureTable($table);  $alias=$this->_schema->quoteTableName($alias);  if(empty($criteria->join)){    $sql="DELETE FROM {$table->rawName}";  }else{    $sql="DELETE $alias FROM {$table->rawName} $alias";  }  $sql=$this->applyJoin($sql,$criteria->join);  $sql=$this->applyCondition($sql,$criteria->condition);  $sql=$this->applyGroup($sql,$criteria->group);  $sql=$this->applyHaving($sql,$criteria->having);  $sql=$this->applyOrder($sql,$criteria->order);  $sql=$this->applyLimit($sql,$criteria->limit,$criteria->offset);  $command=$this->_connection->createCommand($sql);  $this->bindValues($command,$criteria->params);  return $command;}