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A clean-up after the patch for MDEV-8747 and MDEV-8749:

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removing IMPOSSIBLE_RESULT from Item_result, as it's not
needed any more. The fact that an Item is not in a comparison
context is now always designated by IDENTITY_SUBST in Subst_constraint.
Previously IMPOSSIBLE_RESULT and IDENTITY_SUBST co-existed but
actually meant the same thing.
This commit is contained in:
Alexander Barkov
2015-09-06 13:25:47 +04:00
parent c108019a48
commit e0df116056
11 changed files with 47 additions and 100 deletions
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sql/sql_class.cc
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@@ -3395,7 +3395,6 @@ int select_max_min_finder_subselect::send_data(List<Item> &items)
break;
case ROW_RESULT:
case TIME_RESULT:
case IMPOSSIBLE_RESULT:
// This case should never be choosen
DBUG_ASSERT(0);
op= 0;