favor a perfect match

tests/api/test_formdata.py

@@ -1160,7 +1160,7 @@ def test_api_list_formdata(pub, local_user):
     # check fts
     resp = get_app(pub).get(sign_uri('/api/forms/test/list?full=on&q=foo', user=local_user))
     assert len(resp.json) == 30
-    resp = get_app(pub).get(sign_uri('/api/forms/test/list?full=on&q=floobla', user=local_user))
+    resp = get_app(pub).get(sign_uri('/api/forms/test/list?full=on&q=baz', user=local_user))
     assert len(resp.json) == 14
 
 

wcs/sql.py

@@ -1718,8 +1718,9 @@ with
         tokenized as (select unnest(regexp_split_to_array($1, '\s+')) w),
         super_tokenized as (
             select w,
-                coalesce(tsquery_agg_or(plainto_tsquery(token) order by token <-> w desc), plainto_tsquery(w)) tokens
+                coalesce(perfect.token, tsquery_agg_or(plainto_tsquery(token) order by token <-> w desc), plainto_tsquery(w)) tokens
             from tokenized
+            left join wcs_search_tokens perfect on token = plainto_tsquery(w)
             left join wcs_search_tokens on token % w and w not similar to '%[0-9]{2,}%'
             group by w)
 select tsquery_agg_and(tokens) from super_tokenized;