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Bug #1043845 st_distance() results are incorrect depending on variable order.

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Autointersections of an object were treated as nodes, so the wrong result.

per-file comments:
  mysql-test/r/gis.result
Bug #1043845 st_distance() results are incorrect depending on variable order.
        test result updated.
  mysql-test/t/gis.test
Bug #1043845 st_distance() results are incorrect depending on variable order.
        test case added.
  sql/item.cc
        small fix to make compilers happy.
  sql/item_geofunc.cc
Bug #1043845 st_distance() results are incorrect depending on variable order.
        Skip intersection points when calculate distance.
This commit is contained in:
Alexey Botchkov 2012-08-31 19:50:45 +05:00
commit 589c62fefe
4 changed files with 42 additions and 2 deletions
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2
sql/item.cc
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@ -8858,7 +8858,7 @@ bool Item_type_holder::join_types(THD *thd, Item *item)
item->max_length, item->decimals));
fld_type= Field::field_type_merge(fld_type, get_real_type(item));
{
int item_decimals= item->decimals;
uint item_decimals= item->decimals;
/* fix variable decimals which always is NOT_FIXED_DEC */
if (Field::result_merge_type(fld_type) == INT_RESULT)
item_decimals= 0;