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Fix bug #12993 View column rename broken in subselect

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When view column aliased in subselect alias is set on ref which represents
field. When tmp table is created for subselect, it takes name of original field
not ref. Because of this alias on view column in subselect is lost. Which
results in reported error.

Now when alias is set on ref, it's set on ref real item too.


mysql-test/r/view.result:
  Test case for bug #12993  View column rename broken in subselect
mysql-test/t/view.test:
  Test case for bug #12993  View column rename broken in subselect
sql/sql_base.cc:
  Fix bug #12993 View column rename broken in subselect
  Now when alias is set on ref, it's set on ref real item too.
This commit is contained in:
unknown
2005-09-12 02:46:35 +04:00
parent 62646826b8
commit b3dc4ea3e3
3 changed files with 20 additions and 0 deletions
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5
sql/sql_base.cc
View File

@@ -2648,10 +2648,15 @@ find_field_in_view(THD *thd, TABLE_LIST *table_list,
*ref != NULL means that *ref contains the item that we need to
replace. If the item was aliased by the user, set the alias to
the replacing item.
We need to set alias on both ref itself and on ref real item.
*/
if (*ref && !(*ref)->is_autogenerated_name)
{
item->set_name((*ref)->name, (*ref)->name_length,
system_charset_info);
item->real_item()->set_name((*ref)->name, (*ref)->name_length,
system_charset_info);
}
if (register_tree_change)
thd->change_item_tree(ref, item);
else