favor a perfect match

wcs/sql.py

@@ -1718,10 +1718,12 @@ with
         tokenized as (select unnest(regexp_split_to_array($1, '\s+')) w),
         super_tokenized as (
             select w,
-                coalesce(perfect.token, tsquery_agg_or(plainto_tsquery(token) order by token <-> w desc), plainto_tsquery(w)) tokens
+                coalesce(perfect.token,
+                         tsquery_agg_or(plainto_tsquery(partial.token) order by partial.token <-> w desc),
+                         plainto_tsquery(w)) tokens
             from tokenized
-            left join wcs_search_tokens perfect on token = plainto_tsquery(w)::text
-            left join wcs_search_tokens on token % w and w not similar to '%[0-9]{2,}%'
+            left join wcs_search_tokens perfect on perfect.token = plainto_tsquery(w)::text
+            left join wcs_search_tokens partial on partial.token % w and w not similar to '%[0-9]{2,}%'
             group by w)
 select tsquery_agg_and(tokens) from super_tokenized;
 $function$;""")