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bug#5782

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unknown 2004-09-30 21:36:25 +00:00
commit f5f55979f4
3 changed files with 83 additions and 2 deletions
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41
mysql-test/r/ndb_limit.result
View file

@ -29,3 +29,44 @@ count(*)
select * from t2 limit 0;
a b c
drop table t2;
CREATE TABLE `t2` (
`views` int(11) NOT NULL default '0',
`clicks` int(11) NOT NULL default '0',
`day` date NOT NULL default '0000-00-00',
`hour` tinyint(4) NOT NULL default '0',
`bannerid` smallint(6) NOT NULL default '0',
`zoneid` smallint(6) NOT NULL default '0',
`source` varchar(50) NOT NULL default '',
PRIMARY KEY (`day`,`hour`,`bannerid`,`zoneid`,`source`),
KEY `bannerid_day` (`bannerid`,`day`),
KEY `zoneid` (`zoneid`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
INSERT INTO `t2` VALUES
( 1,0,'2004-09-17', 5,100,100,''),
( 1,0,'2004-09-18', 7,100,100,''),
( 17,0,'2004-09-27',20,132,100,''),
( 4,0,'2004-09-16',23,132,100,''),
( 86,0,'2004-09-18', 7,196,196,''),
( 11,0,'2004-09-16',16,132,100,''),
(140,0,'2004-09-18', 0,100,164,''),
( 2,0,'2004-09-17', 7,132,100,''),
(846,0,'2004-09-27',11,132,164,''),
( 1,0,'2004-09-18', 8,132,100,''),
( 22,0,'2004-09-27', 9,164,132,''),
(711,0,'2004-09-27', 9,100,164,''),
( 11,0,'2004-09-18', 0,196,132,''),
( 41,0,'2004-09-27',15,196,132,''),
( 57,0,'2004-09-18', 2,164,196,'');
SELECT DATE_FORMAT(day, '%Y%m%d') as date, DATE_FORMAT(day, '%d-%m-%Y')
as date_formatted FROM t2 GROUP BY day ORDER BY day DESC;
date date_formatted
20040927 27-09-2004
20040918 18-09-2004
20040917 17-09-2004
20040916 16-09-2004
SELECT DATE_FORMAT(day, '%Y%m%d') as date, DATE_FORMAT(day, '%d-%m-%Y')
as date_formatted FROM t2 GROUP BY day ORDER BY day DESC LIMIT 2;
date date_formatted
20040927 27-09-2004
20040918 18-09-2004
drop table t2;

38
mysql-test/t/ndb_limit.test
View file

@ -42,3 +42,41 @@ select count(*) from t2 where c=12345678 limit 1000;
select * from t2 limit 0;
drop table t2;
CREATE TABLE `t2` (
`views` int(11) NOT NULL default '0',
`clicks` int(11) NOT NULL default '0',
`day` date NOT NULL default '0000-00-00',
`hour` tinyint(4) NOT NULL default '0',
`bannerid` smallint(6) NOT NULL default '0',
`zoneid` smallint(6) NOT NULL default '0',
`source` varchar(50) NOT NULL default '',
PRIMARY KEY (`day`,`hour`,`bannerid`,`zoneid`,`source`),
KEY `bannerid_day` (`bannerid`,`day`),
KEY `zoneid` (`zoneid`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
INSERT INTO `t2` VALUES
( 1,0,'2004-09-17', 5,100,100,''),
( 1,0,'2004-09-18', 7,100,100,''),
( 17,0,'2004-09-27',20,132,100,''),
( 4,0,'2004-09-16',23,132,100,''),
( 86,0,'2004-09-18', 7,196,196,''),
( 11,0,'2004-09-16',16,132,100,''),
(140,0,'2004-09-18', 0,100,164,''),
( 2,0,'2004-09-17', 7,132,100,''),
(846,0,'2004-09-27',11,132,164,''),
( 1,0,'2004-09-18', 8,132,100,''),
( 22,0,'2004-09-27', 9,164,132,''),
(711,0,'2004-09-27', 9,100,164,''),
( 11,0,'2004-09-18', 0,196,132,''),
( 41,0,'2004-09-27',15,196,132,''),
( 57,0,'2004-09-18', 2,164,196,'');
SELECT DATE_FORMAT(day, '%Y%m%d') as date, DATE_FORMAT(day, '%d-%m-%Y')
as date_formatted FROM t2 GROUP BY day ORDER BY day DESC;
SELECT DATE_FORMAT(day, '%Y%m%d') as date, DATE_FORMAT(day, '%d-%m-%Y')
as date_formatted FROM t2 GROUP BY day ORDER BY day DESC LIMIT 2;
drop table t2;

6
sql/sql_select.cc
View file

@ -7188,11 +7188,13 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
for (nr=0; nr < table->keys ; nr++)
{
uint not_used;
uint used_key_parts;
if (keys.is_set(nr))
{
int flag;
if ((flag=test_if_order_by_key(order, table, nr, &not_used)))
if ((flag=test_if_order_by_key(order, table, nr, &used_key_parts)) > 0 ||
((flag < 0) && (table->file->index_flags(nr,used_key_parts-1, 1)
& HA_READ_PREV)))
{
if (!no_changes)
{