How do I change the JOIN type in a SQL query that Views creates?

For example, in this code

<?php function eb_mine_views_query_alter(&$view, &$query) {   if ($view->name == 'statuser') {     dsm($query, 'before');     $query->where[0]['type'] = 'OR';     dsm($query, 'after');   } } ?>  

Will change

SELECT node.title AS node_title, node.nid AS nid, node.created AS node_created FROM  {node} node INNER JOIN {taxonomy_index} taxonomy_index_value_0 ON node.nid = taxonomy_index_value_0.nid AND taxonomy_index_value_0.tid = :views_join_condition_0 INNER JOIN {taxonomy_index} taxonomy_index_value_1 ON node.nid = taxonomy_index_value_1.nid AND taxonomy_index_value_1.tid = :views_join_condition_1 WHERE ((( (taxonomy_index_value_0.tid = :db_condition_placeholder_2) )**AND**( (taxonomy_index_value_1.tid = :db_condition_placeholder_3) ))) ORDER BY node_created DESC 

to

SELECT node.title AS node_title, node.nid AS nid, node.created AS node_created FROM node node OUTER JOIN taxonomy_index taxonomy_index_value_0 ON node.nid = taxonomy_index_value_0.nid AND taxonomy_index_value_0.tid = '9' OUTER JOIN taxonomy_index taxonomy_index_value_1 ON node.nid = taxonomy_index_value_1.nid AND taxonomy_index_value_1.tid = '6' WHERE ((( (taxonomy_index_value_0.tid = '9') )OR( (taxonomy_index_value_1.tid = '6') )))        ORDER BY node_created DESC LIMIT 5 OFFSET 0; 

As you can see the query changed from AND to OR through the use of OUTER JOINs.

Now I want to change the same code like this:

SELECT node.title AS node_title, node.nid AS nid, node.created AS node_created FROM node node LEFT OUTER JOIN taxonomy_index taxonomy_index_value_0 ON node.nid = taxonomy_index_value_0.nid AND taxonomy_index_value_0.tid = '9' LEFT OUTER JOIN taxonomy_index taxonomy_index_value_1 ON node.nid = taxonomy_index_value_1.nid AND taxonomy_index_value_1.tid = '6' WHERE ((( (taxonomy_index_value_0.tid = '9') )OR( (taxonomy_index_value_1.tid = '6') )))  ORDER BY node_created DESC LIMIT 5 OFFSET 0; 

rather than using OUTER JOIN I want to use LEFT OUTER JOIN.

So how do I do this in my hook?