Sergey Petrunya 3769841d9e BUG#833600: Wrong result with view + outer join + uncorrelated subquery (non-semijoin) ...

- The bug was caused by outer join being incorrectly converted into inner because of 
  invalid return values of Item_direct_view_ref::not_null_tables().
- Provided a correct Item_direct_view_ref::not_null_tables() function.

2011-09-08 23:24:47 +04:00

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