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Merge bk-internal.mysql.com:/home/bk/mysql-4.1/

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into serg.mylan:/usr/home/serg/Abk/mysql-4.1


sql/sql_select.cc:
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unknown
2004-08-23 11:15:44 +02:00
parent 1ffda90b83 e66e0c1a04
commit 40f282d593
2 changed files with 14 additions and 12 deletions
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23
sql/sql_select.cc
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@ -4742,7 +4742,7 @@ static Field* create_tmp_field_from_item(THD *thd,
copy_func If set and item is a function, store copy of item
in this array
from_field if field will be created using other field as example,
pointer example field will be written here
pointer example field will be written here
group 1 if we are going to do a relative group by on result
modify_item 1 if item->result_field should point to new item.
This is relevent for how fill_record() is going to
@ -4751,7 +4751,7 @@ static Field* create_tmp_field_from_item(THD *thd,
the record in the original table.
If modify_item is 0 then fill_record() will update
the temporary table
RETURN
0 on error
new_created field
@ -4775,13 +4775,13 @@ Field *create_tmp_field(THD *thd, TABLE *table,Item *item, Item::Type type,
return new Field_double(item_sum->max_length,maybe_null,
item->name, table, item_sum->decimals);
case Item_sum::VARIANCE_FUNC: /* Place for sum & count */
case Item_sum::STD_FUNC:
case Item_sum::STD_FUNC:
if (group)
return new Field_string(sizeof(double)*2+sizeof(longlong),
0, item->name,table,&my_charset_bin);
else
return new Field_double(item_sum->max_length, maybe_null,
item->name,table,item_sum->decimals);
item->name,table,item_sum->decimals);
case Item_sum::UNIQUE_USERS_FUNC:
return new Field_long(9,maybe_null,item->name,table,1);
default:
@ -4889,7 +4889,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
else // if we run out of slots or we are not using tempool
sprintf(path,"%s%s%lx_%lx_%x",mysql_tmpdir,tmp_file_prefix,current_pid,
thd->thread_id, thd->tmp_table++);
if (lower_case_table_names)
my_casedn_str(files_charset_info, path);
@ -5005,16 +5005,21 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
tmp_from_field++;
*(reg_field++)= new_field;
reclength+=new_field->pack_length();
if (!(new_field->flags & NOT_NULL_FLAG))
null_count++;
if (new_field->flags & BLOB_FLAG)
{
*blob_field++= new_field;
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;
if (!(new_field->flags & NOT_NULL_FLAG))
{
null_count++;
/*
new_field->maybe_null() is still false, it will be
changed below. But we have to setup Item_field correctly
*/
((Item_sum*) item)->args[i]->maybe_null=1;
}
}
}
}