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Changes so that CREATE and INSERT work from UNION's

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This commit is contained in:
Sinisa@sinisa.nasamreza.org
2001-08-12 16:01:32 +03:00
parent 31f269f1dd
commit 2252f945d0
6 changed files with 145 additions and 75 deletions
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183
sql/sql_parse.cc
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@ -48,7 +48,8 @@ static void remove_escape(char *name);
static void refresh_status(void);
static bool append_file_to_dir(char **filename_ptr, char *table_name);
static int create_total_list_and_check_acl(THD *thd, LEX *lex,
TABLE_LIST **result);
TABLE_LIST **result, bool skip_first = false);
static int handle_create_select(THD *thd, LEX *lex, select_result *c_i);
const char *any_db="*any*"; // Special symbol for check_access
@ -1068,7 +1069,7 @@ mysql_execute_command(void)
int res=0;
THD *thd=current_thd;
LEX *lex= &thd->lex;
TABLE_LIST *tables=(TABLE_LIST*) lex->select->table_list.first;
TABLE_LIST *tables=(TABLE_LIST*) lex->select_lex.table_list.first;
SELECT_LEX *select_lex = lex->select;
DBUG_ENTER("mysql_execute_command");
@ -1322,32 +1323,15 @@ mysql_execute_command(void)
thd->select_limit=select_lex->select_limit+select_lex->offset_limit;
if (thd->select_limit < select_lex->select_limit)
thd->select_limit= HA_POS_ERROR; // No limit
if (!(res=open_and_lock_tables(thd,tables->next)))
{
if ((result=new select_create(tables->db ? tables->db : thd->db,
if ((result=new select_create(tables->db ? tables->db : thd->db,
tables->real_name, &lex->create_info,
lex->create_list,
lex->key_list,
select_lex->item_list,lex->duplicates)))
{
res=mysql_select(thd,tables->next,select_lex->item_list,
select_lex->where,
select_lex->ftfunc_list,
(ORDER*) select_lex->order_list.first,
(ORDER*) select_lex->group_list.first,
select_lex->having,
(ORDER*) lex->proc_list.first,
select_lex->options | thd->options,
result);
if (res)
result->abort();
delete result;
}
else
res= -1;
}
}
res=handle_create_select(thd,lex,result);
else
res= -1;
}
else // regular create
{
res = mysql_create_table(thd,tables->db ? tables->db : thd->db,
@ -1612,36 +1596,76 @@ mysql_execute_command(void)
if (thd->select_limit < select_lex->select_limit)
thd->select_limit= HA_POS_ERROR; // No limit
if (check_dup(thd,tables->db,tables->real_name,tables->next))
{
net_printf(&thd->net,ER_INSERT_TABLE_USED,tables->real_name);
DBUG_VOID_RETURN;
}
tables->lock_type=TL_WRITE; // update first table
{
TABLE_LIST *table;
for (table = tables->next ; table ; table=table->next)
table->lock_type= lex->lock_option;
}
if (!(res=open_and_lock_tables(thd,tables)))
{
if ((result=new select_insert(tables->table,&lex->field_list,
lex->sql_command == SQLCOM_REPLACE_SELECT ?
DUP_REPLACE : DUP_IGNORE)))
{
res=mysql_select(thd,tables->next,select_lex->item_list,
select_lex->where,
select_lex->ftfunc_list,
(ORDER*) select_lex->order_list.first,
(ORDER*) select_lex->group_list.first,
select_lex->having,
(ORDER*) lex->proc_list.first,
select_lex->options | thd->options,
result);
delete result;
}
else
res= -1;
if (lex->select_lex.next)
{
TABLE_LIST *total;
if ((res = create_total_list_and_check_acl(thd,lex,&total)))
goto error;
if (check_dup(thd,total->db,total->real_name,total->next))
{
net_printf(&thd->net,ER_INSERT_TABLE_USED,total->real_name);
DBUG_VOID_RETURN;
}
total->lock_type=TL_WRITE; // update first table
{
TABLE_LIST *table;
for (table = total->next ; table ; table=table->next)
table->lock_type= lex->lock_option;
}
if (!(res=open_and_lock_tables(thd, total)))
{
if ((result=new select_insert(total->table,&lex->field_list,
lex->sql_command == SQLCOM_REPLACE_SELECT ?
DUP_REPLACE : DUP_IGNORE)))
{
for (SELECT_LEX *sl=&lex->select_lex; sl; sl=sl->next)
{
TABLE_LIST *help=(TABLE_LIST *)sl->table_list.first;
if (sl==&lex->select_lex) help=help->next;
for (TABLE_LIST *cursor= help;
cursor;
cursor=cursor->next)
cursor->table= ((TABLE_LIST*) cursor->table)->table;
}
res=mysql_union(thd,lex,result);
}
close_thread_tables(thd);
}
}
else
{
if (check_dup(thd,tables->db,tables->real_name,tables->next))
{
net_printf(&thd->net,ER_INSERT_TABLE_USED,tables->real_name);
DBUG_VOID_RETURN;
}
tables->lock_type=TL_WRITE; // update first table
{
TABLE_LIST *table;
for (table = tables->next ; table ; table=table->next)
table->lock_type= lex->lock_option;
}
if (!(res=open_and_lock_tables(thd,tables)))
{
if ((result=new select_insert(tables->table,&lex->field_list,
lex->sql_command == SQLCOM_REPLACE_SELECT ?
DUP_REPLACE : DUP_IGNORE)))
{
res=mysql_select(thd,tables->next,select_lex->item_list,
select_lex->where,
select_lex->ftfunc_list,
(ORDER*) select_lex->order_list.first,
(ORDER*) select_lex->group_list.first,
select_lex->having,
(ORDER*) lex->proc_list.first,
select_lex->options | thd->options,
result);
delete result;
}
else
res= -1;
}
}
#ifdef DELETE_ITEMS
delete select_lex->having;
@ -2434,6 +2458,7 @@ mysql_init_query(THD *thd)
thd->fatal_error=0; // Safety
thd->last_insert_id_used=thd->query_start_used=thd->insert_id_used=0;
thd->sent_row_count=thd->examined_row_count=0;
thd->lex.sql_command=SQLCOM_NONE;
DBUG_VOID_RETURN;
}
@ -2910,14 +2935,14 @@ TABLE_LIST *add_table_to_list(Table_ident *table, LEX_STRING *alias,
*/
static int create_total_list_and_check_acl(THD *thd, LEX *lex,
TABLE_LIST **result)
TABLE_LIST **result, bool skip_first = false)
{
SELECT_LEX *sl;
TABLE_LIST **new_table_list= result, *aux;
const char *current_db=thd->db ? thd->db : ""; // QQ; To be removed
*new_table_list=0; // end result list
for (sl=&lex->select_lex; sl; sl=sl->next)
for (sl= &lex->select_lex; sl; sl=sl->next)
{
if ((lex->sql_command == SQLCOM_UNION_SELECT) &&
sl->order_list.first && sl->next)
@ -2926,6 +2951,7 @@ static int create_total_list_and_check_acl(THD *thd, LEX *lex,
return -1;
}
aux= (TABLE_LIST*) sl->table_list.first;
if (skip_first && sl == &lex->select_lex) aux=aux->next;
if (aux)
{
TABLE_LIST *next;
@ -2961,6 +2987,51 @@ static int create_total_list_and_check_acl(THD *thd, LEX *lex,
return 0;
}
static int handle_create_select(THD *thd, LEX *lex, select_result *c_i)
{
int res;
if (lex->select_lex.next)
{
TABLE_LIST *total;
if ((res = create_total_list_and_check_acl(thd,lex,&total,true)))
return res;
if (!(res=open_and_lock_tables(thd, total)))
{
for (SELECT_LEX *sl=&lex->select_lex; sl; sl=sl->next)
{
TABLE_LIST *help=(TABLE_LIST *)sl->table_list.first;
if (sl==&lex->select_lex) help=help->next;
for (TABLE_LIST *cursor= help;
cursor;
cursor=cursor->next)
cursor->table= ((TABLE_LIST*) cursor->table)->table;
}
res=mysql_union(thd,lex,c_i);
}
close_thread_tables(thd);
}
else
{
TABLE_LIST *tables=(TABLE_LIST*) lex->select_lex.table_list.first;
SELECT_LEX *select_lex=&lex->select_lex;
if (!(res=open_and_lock_tables(thd,tables->next)))
{
res=mysql_select(thd,tables->next,select_lex->item_list,
select_lex->where,
select_lex->ftfunc_list,
(ORDER*) select_lex->order_list.first,
(ORDER*) select_lex->group_list.first,
select_lex->having,
(ORDER*) lex->proc_list.first,
select_lex->options | thd->options,
c_i);
}
}
if (res)
c_i->abort();
delete c_i;
return res;
}
void add_join_on(TABLE_LIST *b,Item *expr)
{