database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

New multi-table-update code

Browse Source 
New (simpler) internal timestamp handling.
More debuging to heap tables.
Small cleanups to multi-table-delete
false -> 0 and true -> 1  (We should use TRUE and FALSE)
This commit is contained in:
monty@mashka.mysql.fi
2002-11-29 16:40:18 +02:00
parent fa7798596d
commit 6603d75213
29 changed files with 776 additions and 636 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
sql/sql_delete.cc
View File

@ -213,12 +213,13 @@ cleanup:
extern "C" int refposcmp2(void* arg, const void *a,const void *b)
{
/* arg is a pointer to file->ref_length */
return memcmp(a,b, *(int*) arg);
}
multi_delete::multi_delete(THD *thd_arg, TABLE_LIST *dt,
uint num_of_tables_arg)
: delete_tables (dt), thd(thd_arg), deleted(0),
: delete_tables(dt), thd(thd_arg), deleted(0),
num_of_tables(num_of_tables_arg), error(0),
do_delete(0), transactional_tables(0), log_delayed(0), normal_tables(0)
{
@ -230,31 +231,22 @@ int
multi_delete::prepare(List<Item> &values)
{
DBUG_ENTER("multi_delete::prepare");
do_delete = true;
do_delete= 1;
thd->proc_info="deleting from main table";
if (thd->options & OPTION_SAFE_UPDATES)
{
TABLE_LIST *table_ref;
for (table_ref=delete_tables; table_ref; table_ref=table_ref->next)
{
TABLE *table=table_ref->table;
if ((thd->options & OPTION_SAFE_UPDATES) && !table->quick_keys)
{
my_error(ER_UPDATE_WITHOUT_KEY_IN_SAFE_MODE,MYF(0));
DBUG_RETURN(1);
}
}
}
DBUG_RETURN(0);
}
void
bool
multi_delete::initialize_tables(JOIN *join)
{
int counter=0;
TABLE_LIST *walk;
Unique **tempfiles_ptr;
DBUG_ENTER("initialize_tables");
if ((thd->options & OPTION_SAFE_UPDATES) && error_if_full_join(join))
DBUG_RETURN(1);
table_map tables_to_delete_from=0;
for (walk= delete_tables ; walk ; walk=walk->next)
tables_to_delete_from|= walk->table->map;
@ -268,9 +260,10 @@ multi_delete::initialize_tables(JOIN *join)
{
/* We are going to delete from this table */
TABLE *tbl=walk->table=tab->table;
walk=walk->next;
/* Don't use KEYREAD optimization on this table */
tbl->no_keyread=1;
walk=walk->next;
tbl->used_keys= 0;
if (tbl->file->has_transactions())
log_delayed= transactional_tables= 1;
else if (tbl->tmp_table != NO_TMP_TABLE)
@ -280,19 +273,17 @@ multi_delete::initialize_tables(JOIN *join)
}
}
walk= delete_tables;
walk->table->used_keys=0;
for (walk=walk->next ; walk ; walk=walk->next, counter++)
tempfiles_ptr= tempfiles;
for (walk=walk->next ; walk ; walk=walk->next)
{
tables_to_delete_from|= walk->table->map;
TABLE *table=walk->table;
/* Don't use key read with MULTI-TABLE-DELETE */
table->used_keys=0;
tempfiles[counter] = new Unique (refposcmp2,
(void *) &table->file->ref_length,
table->file->ref_length,
MEM_STRIP_BUF_SIZE);
*tempfiles_ptr++= new Unique (refposcmp2,
(void *) &table->file->ref_length,
table->file->ref_length,
MEM_STRIP_BUF_SIZE);
}
init_ftfuncs(thd,1);
DBUG_RETURN(thd->fatal_error != 0);
}
@ -307,7 +298,7 @@ multi_delete::~multi_delete()
t->no_keyread=0;
}
for (uint counter = 0; counter < num_of_tables-1; counter++)
for (uint counter= 0; counter < num_of_tables-1; counter++)
{
if (tempfiles[counter])
delete tempfiles[counter];
@ -414,7 +405,7 @@ int multi_delete::do_deletes(bool from_send_error)
else
table_being_deleted = delete_tables;
do_delete = false;
do_delete= 0;
for (table_being_deleted=table_being_deleted->next;
table_being_deleted ;
table_being_deleted=table_being_deleted->next, counter++)
@ -468,7 +459,7 @@ bool multi_delete::send_eof()
was a non-transaction-safe table involved, since
modifications in it cannot be rolled back.
*/
if (deleted)
if (deleted && (error <= 0 || normal_tables))
{
mysql_update_log.write(thd,thd->query,thd->query_length);
if (mysql_bin_log.is_open())
@ -478,11 +469,17 @@ bool multi_delete::send_eof()
if (mysql_bin_log.write(&qinfo) && !normal_tables)
local_error=1; // Log write failed: roll back the SQL statement
}
/* Commit or rollback the current SQL statement */
VOID(ha_autocommit_or_rollback(thd,local_error > 0));
query_cache_invalidate3(thd, delete_tables, 1);
if (!log_delayed)
thd->options|=OPTION_STATUS_NO_TRANS_UPDATE;
}
/* Commit or rollback the current SQL statement */
if (transactional_tables)
if (ha_autocommit_or_rollback(thd,local_error > 0))
local_error=1;
if (deleted)
query_cache_invalidate3(thd, delete_tables, 1);
if (local_error)
::send_error(&thd->net);
else