diff options
Diffstat (limited to 'sql/item_sum.cc')
| -rw-r--r-- | sql/item_sum.cc | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/sql/item_sum.cc b/sql/item_sum.cc index 228e36fc9f9..ae9e46e2abf 100644 --- a/sql/item_sum.cc +++ b/sql/item_sum.cc @@ -417,26 +417,6 @@ void Item_sum::mark_as_sum_func() } -void Item_sum::make_field(Send_field *tmp_field) -{ - if (args[0]->type() == Item::FIELD_ITEM && keep_field_type()) - { - ((Item_field*) args[0])->field->make_field(tmp_field); - /* For expressions only col_name should be non-empty string. */ - char *empty_string= (char*)""; - tmp_field->db_name= empty_string; - tmp_field->org_table_name= empty_string; - tmp_field->table_name= empty_string; - tmp_field->org_col_name= empty_string; - tmp_field->col_name= name; - if (maybe_null) - tmp_field->flags&= ~NOT_NULL_FLAG; - } - else - init_make_field(tmp_field, field_type()); -} - - void Item_sum::print(String *str, enum_query_type query_type) { /* orig_args is not filled with valid values until fix_fields() */ @@ -2556,7 +2536,8 @@ bool Item_sum_count_distinct::add() if (always_null) return 0; copy_fields(tmp_table_param); - copy_funcs(tmp_table_param->items_to_copy); + if (copy_funcs(tmp_table_param->items_to_copy, table->in_use)) + return TRUE; for (Field **field=table->field ; *field ; field++) if ((*field)->is_real_null(0)) @@ -3034,7 +3015,6 @@ Item_func_group_concat::Item_func_group_concat(THD *thd, tree(item->tree), unique_filter(item->unique_filter), table(item->table), - order(item->order), context(item->context), arg_count_order(item->arg_count_order), arg_count_field(item->arg_count_field), @@ -3047,6 +3027,24 @@ Item_func_group_concat::Item_func_group_concat(THD *thd, { quick_group= item->quick_group; result.set_charset(collation.collation); + + /* + Since the ORDER structures pointed to by the elements of the 'order' array + may be modified in find_order_in_list() called from + Item_func_group_concat::setup(), create a copy of those structures so that + such modifications done in this object would not have any effect on the + object being copied. + */ + ORDER *tmp; + if (!(order= (ORDER **) thd->alloc(sizeof(ORDER *) * arg_count_order + + sizeof(ORDER) * arg_count_order))) + return; + tmp= (ORDER *)(order + arg_count_order); + for (uint i= 0; i < arg_count_order; i++, tmp++) + { + memcpy(tmp, item->order[i], sizeof(ORDER)); + order[i]= tmp; + } } @@ -3128,7 +3126,8 @@ bool Item_func_group_concat::add() if (always_null) return 0; copy_fields(tmp_table_param); - copy_funcs(tmp_table_param->items_to_copy); + if (copy_funcs(tmp_table_param->items_to_copy, table->in_use)) + return TRUE; for (uint i= 0; i < arg_count_field; i++) { |