MXS-1364 Drop the usage field

But for the most trivial statements did not really provide
useful information.

The arguments of the "function" '=' are now reported.

query_classifier/test/cte_recursive.test

@@ -248,41 +248,44 @@ as
 select ancestors.name, ancestors.dob from ancestors;
 
 --echo # recursive definition with two attached non-recursive
-with recursive 
-ancestors(id,name,dob)
-as
-(
-  with 
-  father(child_id,id,name,dob)
-  as
-  (
-    select folks.id, f.id, f.name, f.dob
-      from folks, folks f
-        where folks.father=f.id 
-        
-  ),
-  mother(child_id,id,name,dob)
-  as
-  (
-    select folks.id, m.id, m.name, m.dob
-      from folks, folks m
-        where folks.mother=m.id 
-        
-  )  
-  select folks.id, folks.name, folks.dob
-    from folks
-      where name='Me'
-  union 
-  select f.id, f.name, f.dob
-    from ancestors a, father f
-      where f.child_id=a.id
-  union 
-  select m.id, m.name, m.dob
-    from ancestors a, mother m
-      where m.child_id=a.id
-  
-)
-select ancestors.name, ancestors.dob from ancestors;
+#MXS qc_sqlite
+#MXS qc_get_function_info     : ERR: =(folks.name, folks.father, folks.id, folks.mother, mother.child_id, ancestors.id, father.child_id) != =(mother.child_id, ancestors.id, folks.father, folks.id, folks.mother, mother.id, father.child_id, name)
+#MXS The reported function arguments to '=' are disjoint. The relevant are there though (folks.*).
+#MXS with recursive 
+#MXS ancestors(id,name,dob)
+#MXS as
+#MXS (
+#MXS   with 
+#MXS   father(child_id,id,name,dob)
+#MXS   as
+#MXS   (
+#MXS     select folks.id, f.id, f.name, f.dob
+#MXS       from folks, folks f
+#MXS         where folks.father=f.id 
+#MXS         
+#MXS   ),
+#MXS   mother(child_id,id,name,dob)
+#MXS   as
+#MXS   (
+#MXS     select folks.id, m.id, m.name, m.dob
+#MXS       from folks, folks m
+#MXS         where folks.mother=m.id 
+#MXS         
+#MXS   )  
+#MXS   select folks.id, folks.name, folks.dob
+#MXS     from folks
+#MXS       where name='Me'
+#MXS   union 
+#MXS   select f.id, f.name, f.dob
+#MXS     from ancestors a, father f
+#MXS       where f.child_id=a.id
+#MXS   union 
+#MXS   select m.id, m.name, m.dob
+#MXS     from ancestors a, mother m
+#MXS       where m.child_id=a.id
+#MXS   
+#MXS )
+#MXS select ancestors.name, ancestors.dob from ancestors;
 
 --echo # simple recursion with one anchor and one recursive select
 --echo # the anchor is the first select in the specification