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Commit 143a179f authored by unknown's avatar unknown
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Porting surgical changes from 4.0 to 4.1

parent 87f0c557
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Inline Side-by-side
Showing with 85 additions and 81 deletions
sql/sql_select.cc
View file @ 143a179f
......@@ -6963,13 +6963,16 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
{
List<Item> field_list;
Item *item;
List<Item> item_list;
THD *thd=join->thd;
MYSQL_LOCK *save_lock;
SELECT_LEX *select_lex = &(join->thd->lex.select_lex);
select_result *result=join->result;
DBUG_ENTER("select_describe");
/* Don't log this into the slow query log */
select_lex->options&= ~(QUERY_NO_INDEX_USED | QUERY_NO_GOOD_INDEX_USED);
if (join->thd->lex.select == select_lex)
if (thd->lex.select == select_lex)
{
field_list.push_back(new Item_empty_string("table",NAME_LEN));
field_list.push_back(new Item_empty_string("type",10));
......@@ -6985,24 +6988,22 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
item->maybe_null=1;
field_list.push_back(new Item_real("rows",0.0,0,10));
field_list.push_back(new Item_empty_string("Extra",255));
if (send_fields(thd,field_list,1))
if (result->send_fields(field_list,1))
return;
}
char buff[512],*buff_ptr;
String tmp(buff,sizeof(buff)),*packet= &thd->packet;
if (message)
{
packet->length(0);
net_store_null(packet);
net_store_null(packet);
net_store_null(packet);
net_store_null(packet);
net_store_null(packet);
net_store_null(packet);
net_store_null(packet);
net_store_data(packet,message,strlen(message));
if (my_net_write(&thd->net,(char*) packet->ptr(),packet->length()))
DBUG_VOID_RETURN;
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_empty_string("",0));
item_list.push_back(new Item_string(message,strlen(message)));
if (result->send_data(item_list))
result->send_error(0,NullS);
}
else
{
......@@ -7011,69 +7012,70 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
{
JOIN_TAB *tab=join->join_tab+i;
TABLE *table=tab->table;
char buff[512],*buff_ptr=buff;
char buff1[512], buff2[512], bufff[512];
String tmp1(buff1,sizeof(buff1));
String tmp2(buff2,sizeof(buff2));
item_list.empty();
if (tab->type == JT_ALL && tab->select && tab->select->quick)
tab->type= JT_RANGE;
packet->length(0);
net_store_data(packet,table->table_name);
net_store_data(packet,join_type_str[tab->type]);
tmp.length(0);
item_list.push_back(new Item_string(table->table_name,strlen(table->table_name)));
item_list.push_back(new Item_string(join_type_str[tab->type],strlen(join_type_str[tab->type])));
tmp1.length(0); tmp2.length(0);
key_map bits;
uint j;
for (j=0,bits=tab->keys ; bits ; j++,bits>>=1)
{
if (bits & 1)
{
if (tmp.length())
tmp.append(',');
tmp.append(table->key_info[j].name);
if (tmp1.length())
tmp1.append(',');
tmp1.append(table->key_info[j].name);
}
}
if (tmp.length())
net_store_data(packet,tmp.ptr(),tmp.length());
if (tmp1.length())
item_list.push_back(new Item_string(tmp1.ptr(),tmp1.length()));
else
net_store_null(packet);
item_list.push_back(new Item_null());
if (tab->ref.key_parts)
{
net_store_data(packet,table->key_info[tab->ref.key].name);
net_store_data(packet,(uint32) tab->ref.key_length);
tmp.length(0);
item_list.push_back(new Item_string(table->key_info[tab->ref.key].name,strlen(table->key_info[tab->ref.key].name)));
item_list.push_back(new Item_int((int) tab->ref.key_length));
for (store_key **ref=tab->ref.key_copy ; *ref ; ref++)
{
if (tmp.length())
tmp.append(',');
tmp.append((*ref)->name());
if (tmp2.length())
tmp2.append(',');
tmp2.append((*ref)->name());
}
net_store_data(packet,tmp.ptr(),tmp.length());
item_list.push_back(new Item_string(tmp2.ptr(),tmp2.length()));
}
else if (tab->type == JT_NEXT)
{
net_store_data(packet,table->key_info[tab->index].name);
net_store_data(packet,(uint32) table->key_info[tab->index].key_length);
net_store_null(packet);
item_list.push_back(new Item_string(table->key_info[tab->index].name,strlen(table->key_info[tab->index].name)));
item_list.push_back(new Item_int((int) table->key_info[tab->index].key_length));
item_list.push_back(new Item_null());
}
else if (tab->select && tab->select->quick)
{
net_store_data(packet,table->key_info[tab->select->quick->index].name);;
net_store_data(packet,(uint32) tab->select->quick->max_used_key_length);
net_store_null(packet);
item_list.push_back(new Item_string(table->key_info[tab->select->quick->index].name,strlen(table->key_info[tab->select->quick->index].name)));
item_list.push_back(new Item_int((int) tab->select->quick->max_used_key_length));
item_list.push_back(new Item_null());
}
else
{
net_store_null(packet);
net_store_null(packet);
net_store_null(packet);
item_list.push_back(new Item_null());
item_list.push_back(new Item_null());
item_list.push_back(new Item_null());
}
sprintf(buff,"%.0f",join->best_positions[i].records_read);
net_store_data(packet,buff);
sprintf(bufff,"%.0f",join->best_positions[i].records_read);
item_list.push_back(new Item_string(bufff,strlen(bufff)));
my_bool key_read=table->key_read;
if (tab->type == JT_NEXT &&
((table->used_keys & ((key_map) 1 << tab->index))))
key_read=1;
buff_ptr=buff;
if (tab->info)
net_store_data(packet,tab->info);
item_list.push_back(new Item_string(tab->info,strlen(tab->info)));
else if (tab->select)
{
if (tab->use_quick == 2)
......@@ -7127,16 +7129,20 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
}
buff_ptr=strmov(buff_ptr,"Distinct");
}
net_store_data(packet,buff,(uint) (buff_ptr - buff));
if (my_net_write(&thd->net,(char*) packet->ptr(),packet->length()))
DBUG_VOID_RETURN; /* Purecov: Inspected */
item_list.push_back(new Item_string(buff,(uint) (buff_ptr - buff)));
// For next iteration
used_tables|=table->map;
if (result->send_data(item_list))
result->send_error(0,NullS);
}
}
if (!join->thd->lex.select->next)
send_eof(&thd->net);
{
save_lock=thd->lock;
thd->lock=(MYSQL_LOCK *)0;
result->send_eof();
thd->lock=save_lock;
}
DBUG_VOID_RETURN;
}
......
sql/sql_union.cc
View file @ 143a179f
......@@ -31,10 +31,11 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
ORDER *order;
List<Item> item_list;
TABLE *table;
int describe=(lex->select_lex.options & SELECT_DESCRIBE) ? 1 : 0;
int res;
TABLE_LIST result_table_list;
TMP_TABLE_PARAM tmp_table_param;
select_union *union_result;
int res;
DBUG_ENTER("mysql_union");
/* Fix tables 'to-be-unioned-from' list to point at opened tables */
......@@ -70,33 +71,26 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
lex_sl=0;
order=0;
}
if (lex->select_lex.options & SELECT_DESCRIBE)
if (describe)
{
for (sl= &lex->select_lex; sl; sl=sl->next)
{
lex->select=sl;
thd->offset_limit=sl->offset_limit;
thd->select_limit=sl->select_limit+sl->offset_limit;
if (thd->select_limit < sl->select_limit)
thd->select_limit= HA_POS_ERROR; // no limit
if (thd->select_limit == HA_POS_ERROR)
sl->options&= ~OPTION_FOUND_ROWS;
res=mysql_select(thd, (TABLE_LIST*) sl->table_list.first,
sl->item_list,
sl->where,
((sl->braces) ?
(ORDER *) sl->order_list.first : (ORDER *) 0),
(ORDER*) sl->group_list.first,
sl->having,
(ORDER*) NULL,
(sl->options | thd->options | SELECT_NO_UNLOCK |
SELECT_DESCRIBE),
result);
}
DBUG_RETURN(0);
Item *item;
item_list.push_back(new Item_empty_string("table",NAME_LEN));
item_list.push_back(new Item_empty_string("type",10));
item_list.push_back(item=new Item_empty_string("possible_keys",
NAME_LEN*MAX_KEY));
item->maybe_null=1;
item_list.push_back(item=new Item_empty_string("key",NAME_LEN));
item->maybe_null=1;
item_list.push_back(item=new Item_int("key_len",0,3));
item->maybe_null=1;
item_list.push_back(item=new Item_empty_string("ref",
NAME_LEN*MAX_REF_PARTS));
item->maybe_null=1;
item_list.push_back(new Item_real("rows",0.0,0,10));
item_list.push_back(new Item_empty_string("Extra",255));
}
else
{
Item *item;
List_iterator<Item> it(lex->select_lex.item_list);
......@@ -113,7 +107,7 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
bzero((char*) &tmp_table_param,sizeof(tmp_table_param));
tmp_table_param.field_count=item_list.elements;
if (!(table=create_tmp_table(thd, &tmp_table_param, item_list,
(ORDER*) 0, !lex->union_option,
(ORDER*) 0, !describe & !lex->union_option,
1, 0,
(lex->select_lex.options | thd->options |
TMP_TABLE_ALL_COLUMNS))))
......@@ -130,7 +124,9 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
res= -1;
goto exit;
}
for (sl= &lex->select_lex; sl; sl=sl->next)
union_result->save_time_stamp=!describe;
for (sl=&lex->select_lex;sl;sl=sl->next)
{
thd->offset_limit=sl->offset_limit;
thd->select_limit=sl->select_limit+sl->offset_limit;
......@@ -146,7 +142,7 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
(ORDER*) sl->group_list.first,
sl->having,
(ORDER*) NULL,
sl->options | thd->options | SELECT_NO_UNLOCK,
sl->options | thd->options | SELECT_NO_UNLOCK | ((describe) ? SELECT_DESCRIBE : 0),
union_result);
if (res)
goto exit;
......@@ -187,6 +183,8 @@ int mysql_union(THD *thd, LEX *lex,select_result *result)
if (thd->select_limit == HA_POS_ERROR)
thd->options&= ~OPTION_FOUND_ROWS;
}
if (describe)
thd->select_limit= HA_POS_ERROR; // no limit
res=mysql_select(thd,&result_table_list,
item_list, NULL, /*ftfunc_list,*/ order,
(ORDER*) NULL, NULL, (ORDER*) NULL,
......@@ -222,7 +220,7 @@ select_union::~select_union()
int select_union::prepare(List<Item> &list)
{
if (list.elements != table->fields)
if (save_time_stamp && list.elements != table->fields)
{
my_message(ER_WRONG_NUMBER_OF_COLUMNS_IN_SELECT,
ER(ER_WRONG_NUMBER_OF_COLUMNS_IN_SELECT),MYF(0));
......
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