public function getLeftColumn($index = 0)
    {
        $tableName = $this->getLeftTableAliasOrName();

        return $tableName ? $tableName . '.' . $this->left[$index] : $this->left[$index];
    }
public function getLeftColumn($index = 0)
    {
        $tableName = $this->getLeftTableAliasOrName();

        return $tableName ? $tableName . '.' . $this->left[$index] : $this->left[$index];
    }
public function getLeftColumn ( $ index = 0 ) { $ tableName = $ this -> getLeftTableAliasOrName ( ) ; return $ tableName ? $ tableName . '.' . $ this -> left [ $ index ] : $ this -> left [ $ index ] ; }
Get the fully qualified name of the left column of the join condition

@example
<code>
$join->addCondition('book.AUTHOR_ID', 'author.ID');
echo $join->getLeftColumn(); // 'book.AUTHOR_ID'
</code>
@param  integer $index The number of the condition to use
@return string
Get the fully qualified name of the left column of the join condition