Searches with many keywords are killing my server
>>> [!note] Migrated issue
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<!-- Migrated from issue #514366. -->
Reported by: [dejbar](https://www.drupal.org/user/241003)
>>>
<p>Fastsearch is generating queries from searches that are running forever (until my server crashes from all the other locked up queries). It happens when somebody enters a search with many common words. For example "how can I find the best mp3 software in the world please help me".</p>
<p>Looking at the query log shows the query being generated has a table joined for every term so it is easy to see why the query cause problems. Here is an example</p>
<pre>SELECT count(DISTINCT(node.nid))<br> FROM node node<br> LEFT JOIN search_index search_index<br> ON node.nid = search_index.sid<br> LEFT JOIN search_index search_index2<br> ON node.nid = search_index2.sid<br> LEFT JOIN search_index search_index3<br> ON node.nid = search_index3.sid<br> LEFT JOIN search_index search_index4<br> ON node.nid = search_index4.sid<br> LEFT JOIN search_index search_index5<br> ON node.nid = search_index5.sid<br> LEFT JOIN search_index search_index6<br> ON node.nid = search_index6.sid<br> LEFT JOIN search_index search_index7<br> ON node.nid = search_index7.sid<br> LEFT JOIN search_index search_index8<br> ON node.nid = search_index8.sid<br> LEFT JOIN search_index search_index9<br> ON node.nid = search_index9.sid<br> LEFT JOIN term_node term_node<br> ON node.nid = term_node.nid<br> LEFT JOIN term_hierarchy term_hierarchy<br> ON term_node.tid = term_hierarchy.tid<br> LEFT JOIN content_field_short_desc_0 node_data_field_short_desc_0<br> ON node.vid = node_data_field_short_desc_0.vid<br> LEFT JOIN content_type_listing6 node_data_field_file_date<br> ON node.vid = node_data_field_file_date.vid<br> LEFT JOIN node_comment_statistics node_comment_statistics<br> ON node.nid = node_comment_statistics.nid<br> LEFT JOIN content_field_view_count node_data_field_view_count<br> ON node.vid = node_data_field_view_count.vid<br> WHERE<br> (node.status = '1') AND (node.type IN ('listing6')) AND<br> ((search_index.word='best' AND search_index2.word='mp3' AND search_index3.word='the' AND search_index4.word='ion' AND search_index5.word='the' AND search_index6.word='wolrld' AND search_index7.word='how' AND search_index8.word='can' AND search_index9.word='for')) AND (term_node.tid = '59')</pre><p>I'm surprised not to find many other support issues like this. Is there something I'm missing or is this a problem with fastsearch?</p>
issue
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