Commit 3345a715 authored by Mattias Jonsson's avatar Mattias Jonsson
Browse files

Bug#35931 Index search of partitioned MyISAM table 

returns erroneous results

Used the wrong function when fixing 30480 which lead to
no stop on end_key resulting in duplicate results from index scan

Includes test cases for the duplicates 37327 and 37329,
Duplicate rows and bad performance/High Handler_read_next values

Recommit after merge issues
parent 02da61e2

mysql-test/r/partition.result

+203 −1
Original line number Diff line number Diff line 
drop table if exists t1;

drop table if exists t1, t2;

CREATE TABLE t1 (

a INT NOT NULL,   

b MEDIUMINT NOT NULL,   

c INT NOT NULL,

KEY b (b)

) ENGINE=MyISAM

PARTITION BY LIST (a) (

PARTITION p0 VALUES IN (1) 

);

INSERT INTO t1 VALUES (1,1,0), (1,1,1), (1,1,2), (1,1,53), (1,1,4), (1,1,5),

(1,1,6), (1,1,7), (1,1,8), (1,1,9), (1,1,10), (1,1,11), (1,1,12), (1,1,13),

(1,1,14), (1,1,15), (1,1,16), (1,1,67), (1,1,18), (1,1,19), (1,1,20), (1,1,21),

(1,1,22), (1,1,23), (1,1,24), (1,1,75), (1,1,26), (1,1,27), (1,1,128),

(1,1,79), (1,1,30), (1,1,31), (1,1,32), (1,1,33), (1,1,34), (1,1,85), (1,1,36),

(1,1,37), (1,1,38), (1,1,39), (1,1,40), (1,1,241), (1,1,42), (1,1,43),

(1,1,44), (1,1,45), (1,1,46), (1,1,147), (1,1,48), (1,1,49), (1,2,0), (1,2,1),

(1,2,2), (1,2,3), (1,2,4), (1,2,5), (1,2,6), (1,2,7), (1,2,8), (1,2,9),

(1,2,10), (1,2,11), (1,2,12), (1,2,13), (1,2,14), (1,2,15), (1,2,16), (1,2,17),

(1,2,18), (1,2,19), (1,2,20), (1,2,21), (1,2,22), (1,2,23), (1,2,24), (1,2,25),

(1,2,26), (1,2,27), (1,2,28), (1,2,29), (1,2,30), (1,2,31), (1,2,32), (1,2,33),

(1,2,34), (1,2,35), (1,2,36), (1,2,37), (1,2,38), (1,2,39), (1,2,40), (1,2,41),

(1,2,42), (1,2,43), (1,2,44), (1,2,45), (1,2,46), (1,2,47), (1,2,48), (1,2,49),

(1,6,0), (1,6,1), (1,6,2), (1,6,3), (1,6,4), (1,6,5), (1,6,6), (1,6,7),

(1,6,8), (1,6,9), (1,6,10), (1,6,11), (1,6,12), (1,6,13), (1,6,14), (1,6,15),

(1,6,16), (1,6,17), (1,6,18), (1,6,19), (1,6,20), (1,6,21), (1,6,22), (1,6,23),

(1,6,24), (1,6,25), (1,6,26), (1,6,27), (1,6,28), (1,6,29), (1,6,30), (1,6,31),

(1,6,32), (1,6,33), (1,6,34), (1,6,35), (1,6,36), (1,6,37), (1,6,38), (1,6,39),

(1,6,40), (1,6,41), (1,6,42), (1,6,43), (1,6,44), (1,6,45), (1,6,46), (1,6,47),

(1,6,48), (1,6,49), (1,7,0), (1,7,1), (1,7,2), (1,7,3), (1,7,4), (1,7,5),

(1,7,6), (1,7,7), (1,7,8), (1,7,9), (1,7,10), (1,7,11), (1,7,12), (1,7,13),

(1,7,14), (1,7,15), (1,7,16), (1,7,17), (1,7,18), (1,7,19), (1,7,20), (1,7,21),

(1,7,22), (1,7,23), (1,7,24), (1,7,25), (1,7,26), (1,7,27), (1,7,28), (1,7,29),

(1,7,30), (1,7,31), (1,7,32), (1,7,33), (1,7,34), (1,7,35), (1,7,38), (1,7,39),

(1,7,90), (1,7,41), (1,7,43), (1,7,48), (1,7,49), (1,9,0), (1,9,1), (1,9,2),

(1,9,3), (1,9,4), (1,9,5), (1,9,6), (1,9,7), (1,9,8), (1,9,9), (1,9,10),

(1,9,11), (1,9,12), (1,9,13), (1,9,14), (1,9,15), (1,9,16), (1,9,17), (1,9,18),

(1,9,19), (1,9,20), (1,9,21), (1,9,22), (1,9,23), (1,9,24), (1,9,25), (1,9,26),

(1,9,29), (1,9,32), (1,9,35), (1,9,38), (1,10,0), (1,10,1), (1,10,2), (1,10,3),

(1,10,4), (1,10,5), (1,10,6), (1,10,7), (1,10,8), (1,10,9), (1,10,10),

(1,10,11), (1,10,13), (1,10,14), (1,10,15), (1,10,16), (1,10,17), (1,10,18),

(1,10,22), (1,10,24), (1,10,25), (1,10,26), (1,10,28), (1,10,131), (1,10,33),

(1,10,84), (1,10,35), (1,10,40), (1,10,42), (1,10,49), (1,11,0), (1,11,1),

(1,11,2), (1,11,3), (1,11,4), (1,11,5), (1,11,6), (1,11,7), (1,11,8), (1,11,9),

(1,11,10), (1,11,11), (1,11,12), (1,11,13), (1,11,14), (1,11,15), (1,11,16),

(1,11,17), (1,11,18), (1,11,19), (1,11,20), (1,11,21), (1,11,22), (1,11,23),

(1,11,24), (1,11,25), (1,11,26), (1,11,27), (1,11,28), (1,11,30), (1,11,31),

(1,11,32), (1,11,33), (1,11,34), (1,11,35), (1,11,37), (1,11,39), (1,11,40),

(1,11,42), (1,11,44), (1,11,45), (1,11,47), (1,11,48), (1,14,104), (1,14,58),

(1,14,12), (1,14,13), (1,14,15), (1,14,16), (1,14,17), (1,14,34), (1,15,0),

(1,15,1), (1,15,2), (1,15,3), (1,15,4), (1,15,5), (1,15,7), (1,15,9),

(1,15,15), (1,15,27), (1,15,49), (1,16,0), (1,16,1), (1,16,3), (1,17,4),

(1,19,1);

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

COUNT(*)

24

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SUM(c)

400

ALTER TABLE t1 DROP INDEX b;

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

COUNT(*)

24

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SUM(c)

400

ALTER TABLE t1 ENGINE = Memory;

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

COUNT(*)

24

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SUM(c)

400

ALTER TABLE t1 ADD INDEX b USING HASH (b);

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

COUNT(*)

24

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SUM(c)

400

DROP TABLE t1;

CREATE TABLE `t1` (

`c1` int(11) DEFAULT NULL,

KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `t2` (

`c1` int(11) DEFAULT NULL,

KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (c1) (PARTITION a VALUES LESS THAN (100) ENGINE = MyISAM, PARTITION b VALUES LESS THAN MAXVALUE ENGINE = MyISAM) */;

INSERT INTO `t1` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);

INSERT INTO `t2` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);

EXPLAIN PARTITIONS SELECT c1 FROM t1 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	NULL	range	c1	c1	5	NULL	4	Using where; Using index

FLUSH STATUS;

SELECT c1 FROM t1 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);

c1

11

12

18

19

SHOW STATUS LIKE 'Handler_read_%';

Variable_name	Value

Handler_read_first	0

Handler_read_key	2

Handler_read_next	4

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	0

EXPLAIN PARTITIONS SELECT c1 FROM t2 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	a	range	c1	c1	5	NULL	4	Using where; Using index

FLUSH STATUS;

SELECT c1 FROM t2 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);

c1

11

12

18

19

SHOW STATUS LIKE 'Handler_read_%';

Variable_name	Value

Handler_read_first	0

Handler_read_key	2

Handler_read_next	4

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	0

DROP TABLE t1,t2;

CREATE TABLE `t1` (

`c1` int(11) DEFAULT NULL,

KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1;

CREATE TABLE `t2` (

`c1` int(11) DEFAULT NULL,

KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (c1) (PARTITION a VALUES LESS THAN (100) ENGINE = MyISAM, PARTITION b VALUES LESS THAN MAXVALUE ENGINE = MyISAM) */;

INSERT INTO `t1` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);

INSERT INTO `t2` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);

EXPLAIN PARTITIONS SELECT c1 FROM t1 WHERE (c1 > 2 AND c1 < 5);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	NULL	range	c1	c1	5	NULL	2	Using where; Using index

FLUSH STATUS;

SELECT c1 FROM t1 WHERE (c1 > 2 AND c1 < 5);

c1

3

4

SHOW STATUS LIKE 'Handler_read_%';

Variable_name	Value

Handler_read_first	0

Handler_read_key	1

Handler_read_next	2

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	0

EXPLAIN PARTITIONS SELECT c1 FROM t2 WHERE (c1 > 2 AND c1 < 5);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	a	range	c1	c1	5	NULL	2	Using where; Using index

FLUSH STATUS;

SELECT c1 FROM t2 WHERE (c1 > 2 AND c1 < 5);

c1

3

4

SHOW STATUS LIKE 'Handler_read_%';

Variable_name	Value

Handler_read_first	0

Handler_read_key	1

Handler_read_next	2

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	0

EXPLAIN PARTITIONS SELECT c1 FROM t1 WHERE (c1 > 12 AND c1 < 15);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	NULL	range	c1	c1	5	NULL	2	Using where; Using index

FLUSH STATUS;

SELECT c1 FROM t1 WHERE (c1 > 12 AND c1 < 15);

c1

13

14

SHOW STATUS LIKE 'Handler_read_%';

Variable_name	Value

Handler_read_first	0

Handler_read_key	1

Handler_read_next	2

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	0

EXPLAIN PARTITIONS SELECT c1 FROM t2 WHERE (c1 > 12 AND c1 < 15);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	a	range	c1	c1	5	NULL	2	Using where; Using index

FLUSH STATUS;

SELECT c1 FROM t2 WHERE (c1 > 12 AND c1 < 15);

c1

13

14

SHOW STATUS LIKE 'Handler_read_%';

Variable_name	Value

Handler_read_first	0

Handler_read_key	1

Handler_read_next	2

Handler_read_prev	0

Handler_read_rnd	0

Handler_read_rnd_next	0

DROP TABLE t1,t2;

create table t1 (a int) partition by list ((a/3)*10 div 1)

(partition p0 values in (0), partition p1 values in (1));

ERROR HY000: This partition function is not allowed

mysql-test/t/partition.test

+137 −1
Original line number Diff line number Diff line
@@ -11,9 +11,145 @@ 
--source include/have_partition.inc



--disable_warnings

drop table if exists t1;

drop table if exists t1, t2;

--enable_warnings



#

# Bug35931: Index search may return duplicates

#

CREATE TABLE t1 (

  a INT NOT NULL,   

  b MEDIUMINT NOT NULL,   

  c INT NOT NULL,

  KEY b (b)

) ENGINE=MyISAM

PARTITION BY LIST (a) (

  PARTITION p0 VALUES IN (1) 

);

INSERT INTO t1 VALUES (1,1,0), (1,1,1), (1,1,2), (1,1,53), (1,1,4), (1,1,5),

(1,1,6), (1,1,7), (1,1,8), (1,1,9), (1,1,10), (1,1,11), (1,1,12), (1,1,13),

(1,1,14), (1,1,15), (1,1,16), (1,1,67), (1,1,18), (1,1,19), (1,1,20), (1,1,21),

(1,1,22), (1,1,23), (1,1,24), (1,1,75), (1,1,26), (1,1,27), (1,1,128),

(1,1,79), (1,1,30), (1,1,31), (1,1,32), (1,1,33), (1,1,34), (1,1,85), (1,1,36),

(1,1,37), (1,1,38), (1,1,39), (1,1,40), (1,1,241), (1,1,42), (1,1,43),

(1,1,44), (1,1,45), (1,1,46), (1,1,147), (1,1,48), (1,1,49), (1,2,0), (1,2,1),

(1,2,2), (1,2,3), (1,2,4), (1,2,5), (1,2,6), (1,2,7), (1,2,8), (1,2,9),

(1,2,10), (1,2,11), (1,2,12), (1,2,13), (1,2,14), (1,2,15), (1,2,16), (1,2,17),

(1,2,18), (1,2,19), (1,2,20), (1,2,21), (1,2,22), (1,2,23), (1,2,24), (1,2,25),

(1,2,26), (1,2,27), (1,2,28), (1,2,29), (1,2,30), (1,2,31), (1,2,32), (1,2,33),

(1,2,34), (1,2,35), (1,2,36), (1,2,37), (1,2,38), (1,2,39), (1,2,40), (1,2,41),

(1,2,42), (1,2,43), (1,2,44), (1,2,45), (1,2,46), (1,2,47), (1,2,48), (1,2,49),

(1,6,0), (1,6,1), (1,6,2), (1,6,3), (1,6,4), (1,6,5), (1,6,6), (1,6,7),

(1,6,8), (1,6,9), (1,6,10), (1,6,11), (1,6,12), (1,6,13), (1,6,14), (1,6,15),

(1,6,16), (1,6,17), (1,6,18), (1,6,19), (1,6,20), (1,6,21), (1,6,22), (1,6,23),

(1,6,24), (1,6,25), (1,6,26), (1,6,27), (1,6,28), (1,6,29), (1,6,30), (1,6,31),

(1,6,32), (1,6,33), (1,6,34), (1,6,35), (1,6,36), (1,6,37), (1,6,38), (1,6,39),

(1,6,40), (1,6,41), (1,6,42), (1,6,43), (1,6,44), (1,6,45), (1,6,46), (1,6,47),

(1,6,48), (1,6,49), (1,7,0), (1,7,1), (1,7,2), (1,7,3), (1,7,4), (1,7,5),

(1,7,6), (1,7,7), (1,7,8), (1,7,9), (1,7,10), (1,7,11), (1,7,12), (1,7,13),

(1,7,14), (1,7,15), (1,7,16), (1,7,17), (1,7,18), (1,7,19), (1,7,20), (1,7,21),

(1,7,22), (1,7,23), (1,7,24), (1,7,25), (1,7,26), (1,7,27), (1,7,28), (1,7,29),

  (1,7,30), (1,7,31), (1,7,32), (1,7,33), (1,7,34), (1,7,35), (1,7,38), (1,7,39),

(1,7,90), (1,7,41), (1,7,43), (1,7,48), (1,7,49), (1,9,0), (1,9,1), (1,9,2),

(1,9,3), (1,9,4), (1,9,5), (1,9,6), (1,9,7), (1,9,8), (1,9,9), (1,9,10),

(1,9,11), (1,9,12), (1,9,13), (1,9,14), (1,9,15), (1,9,16), (1,9,17), (1,9,18),

(1,9,19), (1,9,20), (1,9,21), (1,9,22), (1,9,23), (1,9,24), (1,9,25), (1,9,26),

(1,9,29), (1,9,32), (1,9,35), (1,9,38), (1,10,0), (1,10,1), (1,10,2), (1,10,3),

(1,10,4), (1,10,5), (1,10,6), (1,10,7), (1,10,8), (1,10,9), (1,10,10),

(1,10,11), (1,10,13), (1,10,14), (1,10,15), (1,10,16), (1,10,17), (1,10,18),

(1,10,22), (1,10,24), (1,10,25), (1,10,26), (1,10,28), (1,10,131), (1,10,33),

(1,10,84), (1,10,35), (1,10,40), (1,10,42), (1,10,49), (1,11,0), (1,11,1),

(1,11,2), (1,11,3), (1,11,4), (1,11,5), (1,11,6), (1,11,7), (1,11,8), (1,11,9),

(1,11,10), (1,11,11), (1,11,12), (1,11,13), (1,11,14), (1,11,15), (1,11,16),

(1,11,17), (1,11,18), (1,11,19), (1,11,20), (1,11,21), (1,11,22), (1,11,23),

(1,11,24), (1,11,25), (1,11,26), (1,11,27), (1,11,28), (1,11,30), (1,11,31),

(1,11,32), (1,11,33), (1,11,34), (1,11,35), (1,11,37), (1,11,39), (1,11,40),

(1,11,42), (1,11,44), (1,11,45), (1,11,47), (1,11,48), (1,14,104), (1,14,58),

(1,14,12), (1,14,13), (1,14,15), (1,14,16), (1,14,17), (1,14,34), (1,15,0),

(1,15,1), (1,15,2), (1,15,3), (1,15,4), (1,15,5), (1,15,7), (1,15,9),

(1,15,15), (1,15,27), (1,15,49), (1,16,0), (1,16,1), (1,16,3), (1,17,4),

(1,19,1);

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

ALTER TABLE t1 DROP INDEX b;

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

ALTER TABLE t1 ENGINE = Memory;

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

ALTER TABLE t1 ADD INDEX b USING HASH (b);

SELECT COUNT(*) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

SELECT SUM(c) FROM t1 WHERE b NOT IN ( 1,2,6,7,9,10,11 );

DROP TABLE t1;



# Bug#37327 Range scan on partitioned table returns duplicate rows

# (Duplicate of Bug#35931)

CREATE TABLE `t1` (

  `c1` int(11) DEFAULT NULL,

  KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1;



CREATE TABLE `t2` (

  `c1` int(11) DEFAULT NULL,

  KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (c1) (PARTITION a VALUES LESS THAN (100) ENGINE = MyISAM, PARTITION b VALUES LESS THAN MAXVALUE ENGINE = MyISAM) */;



INSERT INTO `t1` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);

INSERT INTO `t2` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);



EXPLAIN PARTITIONS SELECT c1 FROM t1 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);



FLUSH STATUS;

SELECT c1 FROM t1 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);

SHOW STATUS LIKE 'Handler_read_%';



EXPLAIN PARTITIONS SELECT c1 FROM t2 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);



FLUSH STATUS;

SELECT c1 FROM t2 WHERE (c1 > 10 AND c1 < 13) OR (c1 > 17 AND c1 < 20);

SHOW STATUS LIKE 'Handler_read_%';

DROP TABLE t1,t2;



# Bug#37329 Range scan on partitioned tables shows higher Handler_read_next

# (marked as duplicate of Bug#35931)

CREATE TABLE `t1` (

  `c1` int(11) DEFAULT NULL,

  KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1;



CREATE TABLE `t2` (

  `c1` int(11) DEFAULT NULL,

  KEY `c1` (`c1`)

) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY RANGE (c1) (PARTITION a VALUES LESS THAN (100) ENGINE = MyISAM, PARTITION b VALUES LESS THAN MAXVALUE ENGINE = MyISAM) */;



INSERT INTO `t1` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);

INSERT INTO `t2` VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);



EXPLAIN PARTITIONS SELECT c1 FROM t1 WHERE (c1 > 2 AND c1 < 5);



FLUSH STATUS;

SELECT c1 FROM t1 WHERE (c1 > 2 AND c1 < 5);

SHOW STATUS LIKE 'Handler_read_%';



EXPLAIN PARTITIONS SELECT c1 FROM t2 WHERE (c1 > 2 AND c1 < 5);



FLUSH STATUS;

SELECT c1 FROM t2 WHERE (c1 > 2 AND c1 < 5);

SHOW STATUS LIKE 'Handler_read_%';



EXPLAIN PARTITIONS SELECT c1 FROM t1 WHERE (c1 > 12 AND c1 < 15);



FLUSH STATUS;

SELECT c1 FROM t1 WHERE (c1 > 12 AND c1 < 15);

SHOW STATUS LIKE 'Handler_read_%';



EXPLAIN PARTITIONS SELECT c1 FROM t2 WHERE (c1 > 12 AND c1 < 15);



FLUSH STATUS;

SELECT c1 FROM t2 WHERE (c1 > 12 AND c1 < 15);

SHOW STATUS LIKE 'Handler_read_%';

DROP TABLE t1,t2;



--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED

create table t1 (a int) partition by list ((a/3)*10 div 1)

(partition p0 values in (0), partition p1 values in (1));

sql/ha_partition.cc

+2 −2
Original line number Diff line number Diff line
@@ -4045,7 +4045,7 @@ int ha_partition::handle_unordered_next(uchar *buf, bool is_next_same) 
  }

  else if (!(error= file->index_next(buf)))

  {

    if (!(file->ha_table_flags() & HA_READ_ORDER) ||

    if (!(file->index_flags(active_index, 0, 1) & HA_READ_ORDER) ||

        compare_key(end_range) <= 0)

    {

      m_last_part= m_part_spec.start_part;
@@ -4123,7 +4123,7 @@ int ha_partition::handle_unordered_scan_next_partition(uchar * buf) 
    }

    if (!error)

    {

      if (!(file->ha_table_flags() & HA_READ_ORDER) ||

      if (!(file->index_flags(active_index, 0, 1) & HA_READ_ORDER) ||

          compare_key(end_range) <= 0)

      {

        m_last_part= i;