Multi word search results sets incorrect count for search_api_facets when Facets is in use
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #1403916. -->
Reported by: [Christofer Roth](https://www.drupal.org/user/151679)
>>>
<p>Doing a multi word search (e.g. "Drupal Modules", but not "Drupal") results in incorrect counts in the search_api_facets array. Actually it always returns 1 in total (that is 1 in count and 1 item in each type.) I had a "content type" facets turned on while doing this.</p>
<p>The reason for this is how the SQL Query looks, after being changed on lines 1085-1087:</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br> $group_by </span><span style="color: #007700">= &</span><span style="color: #0000BB">$db_query</span><span style="color: #007700">-></span><span style="color: #0000BB">getGroupBy</span><span style="color: #007700">();<br> </span><span style="color: #0000BB">$group_by </span><span style="color: #007700">= array();<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>After emptying the GROUP BY, the HAVING COUNT(DISTINCT t.word) will not function as intended. This is because if it's not grouped by t.item_id, only 1 result is possible.</p>
<p>The solution could possibly be to remove these 2 lines, but I'm not sure what the removing of GROUP BY is intended to produce. If it's needed we have to remove the GROUP BY and then add the GROUP BY t.item_id to the DB Select Object, if there are multiple words in the search. On possible solution could then be to replace the above lines with:</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br> </span><span style="color: #FF8000">// Remove group by because of the reason... <br> </span><span style="color: #0000BB">$group_by </span><span style="color: #007700">= &</span><span style="color: #0000BB">$db_query</span><span style="color: #007700">-></span><span style="color: #0000BB">getGroupBy</span><span style="color: #007700">();<br> </span><span style="color: #0000BB">$group_by </span><span style="color: #007700">= array();<br> </span><span style="color: #FF8000">// Count the number of words in the search query<br> </span><span style="color: #0000BB">$keys </span><span style="color: #007700">= </span><span style="color: #0000BB">$query</span><span style="color: #007700">-></span><span style="color: #0000BB">getKeys</span><span style="color: #007700">();<br> </span><span style="color: #0000BB">$word_count </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">;<br> foreach (</span><span style="color: #0000BB">$keys </span><span style="color: #007700">as </span><span style="color: #0000BB">$i </span><span style="color: #007700">=> </span><span style="color: #0000BB">$key</span><span style="color: #007700">) {<br> if (!</span><span style="color: #0000BB">element_child</span><span style="color: #007700">(</span><span style="color: #0000BB">$i</span><span style="color: #007700">)) {<br> continue;<br> }<br> if (</span><span style="color: #0000BB">is_scalar</span><span style="color: #007700">(</span><span style="color: #0000BB">$key</span><span style="color: #007700">)) {<br> </span><span style="color: #0000BB">$word_count</span><span style="color: #007700">++;<br> }<br> }<br> </span><span style="color: #FF8000">// If multi word search, then group by t.item_id.<br> </span><span style="color: #007700">if (</span><span style="color: #0000BB">$word_count </span><span style="color: #007700">> </span><span style="color: #0000BB">1</span><span style="color: #007700">) {<br> </span><span style="color: #0000BB">$db_query</span><span style="color: #007700">-></span><span style="color: #0000BB">groupBy</span><span style="color: #007700">(</span><span style="color: #DD0000">'t.item_id'</span><span style="color: #007700">);<br> }<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>Sorry, if there's any confusion in how I interpret what is actually happening in this portion of the code.</p>
issue
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