本文实例讲述了yii使用deleteall连表删除出现报错问题的解决方法。分享给大家供大家参考，具体如下：
删除数据的时候，经常会遇到连联判断删除数据的条件，今天用Yii 的CDbCriteria生成关连条件。批量删除的时候数据库报错。
页面代码为：
$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($criteria);
错误SQL为：
DELETE FROM `zd_pos_log` LEFT JOIN zd_positions p ON p.zpo_id=t.zpo_id WHERE (p.zpo_type=1) AND (t.zpl_content_id in (76))
正确SQL语句应为：
DELETE t FROM `zd_pos_log` t LEFT JOIN zd_positions p ON p.zpo_id=t.zpo_id WHERE (p.zpo_type=1) AND (t.zpl_content_id in (76))
追溯到Yii 基类：
framework/db/schema/CDbCommandBuilder.php#166
public function createDeleteCommand($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 $command;
}解决方案。修改基类方法：
public function createDeleteCommand($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;
}希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。
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