src/Server/Asyn/Mysql/Miner.php
public function leftJoin($table, $criteria = null, $alias = null)
    {
        return $this->join($table, $criteria, self::LEFT_JOIN, $alias);
    }
public function leftJoin($table, $criteria = null, $alias = null)
    {
        return $this->join($table, $criteria, self::LEFT_JOIN, $alias);
    }
public function leftJoin ( $ table , $ criteria = null , $ alias = null ) { return $ this -> join ( $ table , $ criteria , self :: LEFT_JOIN , $ alias ) ; }
Add a LEFT JOIN table with optional ON criteria.

@param  string $table table name
@param  string|array $criteria optional ON criteria
@param  string $alias optional alias
@return Miner
Add a LEFT JOIN table with optional ON criteria .