Problem:
In query like
select 1 from .. order by match .. against ...;
causes a debug assert failue.
Analysis:
In union type query like
(select * from order by a) order by b;
or
(select * from order by a) union (select * from order by b);
We skip resolving of order by a for 1st query and order by of a and b in
2nd query.
This means that, in case when our order by have Item_func_match class,
we skip resolving it.
But we maintain a ft_func_list and at the time of optimization, when we
Perform FULLTEXT search before all regular searches on the bases of the
list we call Item_func_match::init_search() which will cause debug assert
as the item is not resolved.
Solution:
We will skip execution if the item is not fixed and we will not
fix index(Item_func_match::fix_index()) for which
Item_func_match::fix_field() is not called so that on later changes
we can check the dependency on fix field.
bz
sql/item_func.cc:
skiping execution, if item is not resolved.
