bk resolve (095ae499) · Commits · Software / OSDI20 Artifacts / mariadb

Docs/manual.texi

+5 −1

Original line number	Diff line number	Diff line
		@@ -50067,7 +50067,11 @@ Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}.
		@appendixsubsec Changes in release 4.0.3

		@itemize @bullet
		@item Fixed two bugs in @code{SELECT DISTINCT} with large tables.
		@item
		Fixed bug in multi-table delete when tables are re-ordered in table
		initialization method and ref_length's are of different sizes
		@item
		Fixed two bugs in @code{SELECT DISTINCT} with large tables.
		@item
		Fixed bug in query cache initialisation with very small query cache size.
		@item

+30 −0

Original line number	Diff line number	Diff line
		@@ -70,3 +70,33 @@ create table t1(id1 int not null primary key, t varchar(100)) pack_keys = 1;
		create table t2(id2 int not null, t varchar(100), index(id2)) pack_keys = 1;
		delete t1 from t1,t2 where t1.id1 = t2.id2 and t1.id1 > 500;
		drop table t1,t2;
		DROP TABLE IF EXISTS a,b,c;
		CREATE TABLE a (
		id int(11) NOT NULL default '0',
		name varchar(10) default NULL,
		PRIMARY KEY (id)
		) TYPE=MyISAM;
		INSERT INTO a VALUES (1,'aaa'),(2,'aaa'),(3,'aaa');
		CREATE TABLE b (
		id int(11) NOT NULL default '0',
		name varchar(10) default NULL,
		PRIMARY KEY (id)
		) TYPE=MyISAM;
		INSERT INTO b VALUES (2,'bbb'),(3,'bbb'),(4,'bbb');
		CREATE TABLE c (
		id int(11) NOT NULL default '0',
		mydate datetime default NULL,
		PRIMARY KEY (id)
		) TYPE=MyISAM;
		INSERT INTO c VALUES (1,'2002-02-04 00:00:00'),(3,'2002-05-12 00:00:00'),(5,'2002-05-12 00:00:00'),(6,'2002-06-22
		00:00:00'),(7,'2002-07-22 00:00:00');
		delete a,b,c from a,b,c
		where to_days(now())-to_days(c.mydate)>=30
		and c.id=a.id and c.id=b.id;
		select * from c;
		id mydate
		1 2002-02-04 00:00:00
		5 2002-05-12 00:00:00
		6 2002-06-22 00:00:00
		7 2002-07-22 00:00:00
		DROP TABLE IF EXISTS a,b,c;

+25 −0

Original line number	Diff line number	Diff line
		@@ -80,3 +80,28 @@ while ($1)
		enable_query_log;
		delete t1 from t1,t2 where t1.id1 = t2.id2 and t1.id1 > 500;
		drop table t1,t2;
		DROP TABLE IF EXISTS a,b,c;
		CREATE TABLE a (
		id int(11) NOT NULL default '0',
		name varchar(10) default NULL,
		PRIMARY KEY (id)
		) TYPE=MyISAM;
		INSERT INTO a VALUES (1,'aaa'),(2,'aaa'),(3,'aaa');
		CREATE TABLE b (
		id int(11) NOT NULL default '0',
		name varchar(10) default NULL,
		PRIMARY KEY (id)
		) TYPE=MyISAM;
		INSERT INTO b VALUES (2,'bbb'),(3,'bbb'),(4,'bbb');
		CREATE TABLE c (
		id int(11) NOT NULL default '0',
		mydate datetime default NULL,
		PRIMARY KEY (id)
		) TYPE=MyISAM;
		INSERT INTO c VALUES (1,'2002-02-04 00:00:00'),(3,'2002-05-12 00:00:00'),(5,'2002-05-12 00:00:00'),(6,'2002-06-22
		00:00:00'),(7,'2002-07-22 00:00:00');
		delete a,b,c from a,b,c
		where to_days(now())-to_days(c.mydate)>=30
		and c.id=a.id and c.id=b.id;
		select * from c;
		DROP TABLE IF EXISTS a,b,c;

+14 −13

Original line number	Diff line number	Diff line
		@@ -215,21 +215,8 @@ multi_delete::multi_delete(THD thd_arg, TABLE_LIST dt,
		num_of_tables(num_of_tables_arg), error(0), lock_option(lock_option_arg),
		do_delete(false)
		{
		uint counter=0;
		not_trans_safe=false;
		tempfiles = (Unique *) sql_calloc(sizeof(Unique ) * (num_of_tables-1));

		/* Don't use key read with MULTI-TABLE-DELETE */
		dt->table->used_keys=0;
		for (dt=dt->next ; dt ; dt=dt->next,counter++)
		{
		TABLE *table=dt->table;
		table->used_keys=0;
		tempfiles[counter] = new Unique (refposcmp2,
		(void *) &table->file->ref_length,
		table->file->ref_length,
		MEM_STRIP_BUF_SIZE);
		}
		}


		@@ -260,6 +247,7 @@ multi_delete::prepare(List<Item> &values)
		void
		multi_delete::initialize_tables(JOIN *join)
		{
		int counter=0;
		TABLE_LIST *walk;
		table_map tables_to_delete_from=0;
		for (walk= delete_tables ; walk ; walk=walk->next)
		@@ -281,6 +269,19 @@ multi_delete::initialize_tables(JOIN *join)
		not_trans_safe=true;
		}
		}
		walk= delete_tables;
		walk->table->used_keys=0;
		for (walk=walk->next ; walk ; walk=walk->next, counter++)
		{
		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);
		}
		init_ftfuncs(thd,1);
		}