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olap.test, olap.result:

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Added test case for bug #4767.
item_sum.cc:
  Added a correct setting of the maybe_null flag for a copy of 
  an Item_sum object where the argument was a field of an inner table
  in an outer join read from a temporary table.
  It's part of the fix for bug #4767.
sql_select.cc:
  Made change_refs_to_tmp_fields work correctly
  for test case of bug #4767 where Item_sum::get_tmp_table_item
  failed to build a correct copy of an Item_sum object referring
  to a field in a temporary table.
  It looks like a hack yet.
This commit is contained in:
igor@rurik.mysql.com
2004-08-12 00:02:29 -07:00
parent 39614a3ab3
commit f2b9c5f491
4 changed files with 78 additions and 0 deletions
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2
sql/sql_select.cc
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@ -4995,6 +4995,8 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
blob_count++;
}
((Item_sum*) item)->args[i]= new Item_field(new_field);
if (((Item_sum*) item)->arg_count == 1)
((Item_sum*) item)->result_field= new_field;
}
}
}