Commit 167e534c authored by unknown's avatar unknown
Browse files

Merge pgalbraith@bk-internal.mysql.com:/home/bk/mysql-5.1-new 

into  govinda.patg.net:/home/patg/mysql-build/mysql-5.1-new-wl2986
parents 9bd64152 ff5d0124

mysql-test/r/partition_pruning.result

+244 −38
Original line number Diff line number Diff line
@@ -11,10 +11,10 @@ a int(11) not null 
insert into t1 values (1),(2),(3);

explain partitions select * from t1 where a=1;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p1	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p1	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t1 where a=2;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p0	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t1 where a=1 or a=2;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p0,p1	ALL	NULL	NULL	NULL	NULL	3	Using where
@@ -42,10 +42,10 @@ partition p1 values less than (20) 
insert into t3 values (5),(15);

explain partitions select * from t3 where a=11;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t3	p1	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t3 where a=10;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t3	p1	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t3 where a=20;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
@@ -59,11 +59,11 @@ partition p1 values in (14) 
insert into t4 values (10,2), (10,4);

explain partitions select * from t4 where (a=10 and b=1) or (a=10 and b=2);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t4	p0	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	t4	p0	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t4 

where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t4	p0	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	t4	p0	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t4 where (a=10 and b=2) or (a=10 and b=3)

or (a=10 and b = 4);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
@@ -89,25 +89,25 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 
explain partitions select * from t5

where (a=10 and b=1) or (a=10 and b=2) or (a=10 and b = 3);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t5	p0_sp0,p0_sp1	ALL	NULL	NULL	NULL	NULL	4	Using where

1	SIMPLE	t5	p0_sp0,p0_sp1	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t5 where (a=10 and b=2) or (a=10 and b=3)

or (a=10 and b = 4);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t5	p0_sp0,p0_sp1,p1_sp0,p1_sp1	ALL	NULL	NULL	NULL	NULL	4	Using where

explain partitions select * from t5 where (c=1 and d=1);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t5	p0_sp0,p1_sp0	ALL	NULL	NULL	NULL	NULL	4	Using where

1	SIMPLE	t5	p0_sp0,p1_sp0	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t5 where (c=2 and d=1);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t5	p0_sp1,p1_sp1	ALL	NULL	NULL	NULL	NULL	4	Using where

1	SIMPLE	t5	p0_sp1,p1_sp1	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or 

(c=2 and d=1);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t5	p0_sp0,p0_sp1,p1_sp1	ALL	NULL	NULL	NULL	NULL	4	Using where

1	SIMPLE	t5	p0_sp0,p0_sp1,p1_sp1	ALL	NULL	NULL	NULL	NULL	3	Using where

explain partitions select * from t5 where (a=10 and b=2 and c=1 and d=1) or 

(b=2 and c=2 and d=1);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t5	p0_sp0,p0_sp1,p1_sp1	ALL	NULL	NULL	NULL	NULL	4	Using where

1	SIMPLE	t5	p0_sp0,p0_sp1,p1_sp1	ALL	NULL	NULL	NULL	NULL	3	Using where

create table t6 (a int not null) partition by LIST(a) (

partition p1 values in (1),

partition p3 values in (3),
@@ -121,31 +121,31 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t6 where a <= 1;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p1	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t6	p1	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t6 where a >  9;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t6 where a >= 9;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p9	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t6 where a > 0 and a < 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p1,p3	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t6	p1,p3	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t6 where a > 5 and a < 12;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p7,p9	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t6 where a > 3 and a < 8 ;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p5,p7	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t6	p5,p7	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t6 where a >= 0 and a <= 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p1,p3,p5	ALL	NULL	NULL	NULL	NULL	3	Using where

explain partitions select * from t6 where a >= 5 and a <= 12;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p5,p7,p9	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t6	p5,p7,p9	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t6 where a >= 3 and a <= 8;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t6	p3,p5,p7	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t6	p3,p5,p7	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t6 where a > 3 and a < 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
@@ -159,16 +159,16 @@ partition p90 values less than (90) 
insert into t7 values (10),(30),(50);

explain partitions select * from t7 where a < 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t7	p10	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t7 where a < 10;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t7	p10	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t7 where a <= 10;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t7	p10,p30	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t7	p10,p30	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t7 where a = 10;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t7	p30	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t7	p30	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t7 where a < 90;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t7	p10,p30,p50,p70,p90	ALL	NULL	NULL	NULL	NULL	3	Using where
@@ -183,7 +183,7 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t7 where a > 11 and a < 29;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t7	p30	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

create table t8 (a date not null) partition by RANGE(YEAR(a)) (

partition p0 values less than (1980),

partition p1 values less than (1990),
@@ -192,7 +192,7 @@ partition p2 values less than (2000) 
insert into t8 values ('1985-05-05'),('1995-05-05');

explain partitions select * from t8 where a < '1980-02-02';

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t8	p0,p1	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

create table t9 (a date not null) partition by RANGE(TO_DAYS(a)) (

partition p0 values less than (732299), -- 2004-12-19

partition p1 values less than (732468), -- 2005-06-06
@@ -201,7 +201,7 @@ partition p2 values less than (732664) -- 2005-12-19 
insert into t9 values ('2005-05-05'), ('2005-04-04');

explain partitions select * from t9 where a <  '2004-12-19';

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t9	p0	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t9 where a <= '2004-12-19';

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t9	p0,p1	ALL	NULL	NULL	NULL	NULL	2	Using where
@@ -224,10 +224,10 @@ partition p2 values less than (9) 
insert into t1 values (1),(2),(3);

explain partitions select * from t1 where a1 > 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p1,p2	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t1 where a1 >= 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p1,p2	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p1,p2	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t1 where a1 < 3 and a1 > 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
@@ -242,19 +242,19 @@ partition p3 values in (4) 
insert into t3 values (1,1),(2,2),(3,3);

explain partitions select * from t3 where a=2 or b=1;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t3	p0_sp1,p1_sp0,p1_sp1,p1_sp2,p1_sp3,p2_sp1,p3_sp1	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t3	p0_sp1,p1_sp0,p1_sp1,p1_sp2,p1_sp3,p2_sp1,p3_sp1	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t3 where a=4 or b=2;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t3	p0_sp2,p1_sp2,p2_sp2,p3_sp0,p3_sp1,p3_sp2,p3_sp3	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t3	p0_sp2,p1_sp2,p2_sp2,p3_sp0,p3_sp1,p3_sp2,p3_sp3	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t3 where (a=2 or b=1) and (a=4 or b=2) ;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t3	p1_sp2,p3_sp1	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t3	p1_sp2,p3_sp1	system	NULL	NULL	NULL	NULL	1	

drop table t3;

create table t1 (a int) partition by hash(a) partitions 2;

insert into t1 values (1),(2);

explain partitions select * from t1 where a is null;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	2	Using where

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables

explain partitions select * from t1 where a is not null;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p0,p1	ALL	NULL	NULL	NULL	NULL	2	Using where
@@ -266,25 +266,25 @@ explain partitions 
select * from t1 X, t1 Y 

where X.b = Y.b and (X.a=1 or X.a=2) and (Y.a=2 or Y.a=3);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	X	p1,p2	ALL	a,b	NULL	NULL	NULL	4	Using where

1	SIMPLE	X	p1,p2	ALL	a,b	NULL	NULL	NULL	2	Using where

1	SIMPLE	Y	p2,p3	ref	a,b	b	4	test.X.b	2	Using where

explain partitions

select * from t1 X, t1 Y where X.a = Y.a and (X.a=1 or X.a=2);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	X	p1,p2	ALL	a	NULL	NULL	NULL	4	Using where

1	SIMPLE	X	p1,p2	ALL	a	NULL	NULL	NULL	2	Using where

1	SIMPLE	Y	p1,p2	ref	a	a	4	test.X.a	2	

drop table t1;

create table t1 (a int) partition by hash(a) partitions 20;

insert into t1 values (1),(2),(3);

explain partitions select * from t1 where a >  1 and a < 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p2	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p2	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t1 where a >= 1 and a < 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p1,p2	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p1,p2	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t1 where a >  1 and a <= 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p2,p3	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p2,p3	ALL	NULL	NULL	NULL	NULL	2	Using where

explain partitions select * from t1 where a >= 1 and a <= 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p1,p2,p3	ALL	NULL	NULL	NULL	NULL	3	Using where
@@ -300,7 +300,213 @@ partition p3 values in (3) 
insert into t1 values (1,1),(2,2),(3,3);

explain partitions select * from t1 where b >  1 and b < 3;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p0_sp2,p1_sp2,p2_sp2,p3_sp2	ALL	NULL	NULL	NULL	NULL	3	Using where

1	SIMPLE	t1	p0_sp2,p1_sp2,p2_sp2,p3_sp2	system	NULL	NULL	NULL	NULL	1	

explain partitions select * from t1 where b >  1 and b < 3 and (a =1 or a =2);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	p1_sp2,p2_sp2	ALL	NULL	NULL	NULL	NULL	3	Using where
 
1	SIMPLE	t1	p1_sp2,p2_sp2	system	NULL	NULL	NULL	NULL	1	

DROP TABLE IF EXISTS `t1`;

CREATE TABLE `t1` (

`a` int(11) default NULL

);

INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

DROP TABLE IF EXISTS `t2`;

Warnings:

Note	1051	Unknown table 't2'

CREATE TABLE `t2` (

`a` int(11) default NULL,

KEY `a` (`a`)

) ;

insert into t2 select A.a + 10*(B.a + 10* C.a) from t1 A, t1 B, t1 C ;

insert into t1 select a from t2;

DROP TABLE IF EXISTS `t2`;

CREATE TABLE `t2` (

`a` int(11) default NULL,

`b` int(11) default NULL

) 

PARTITION BY RANGE (a) (

PARTITION p0 VALUES LESS THAN (200),

PARTITION p1 VALUES LESS THAN (400),

PARTITION p2 VALUES LESS THAN (600),

PARTITION p3 VALUES LESS THAN (800),

PARTITION p4 VALUES LESS THAN (1001));

insert into t2 select a,1 from t1 where a < 200;

insert into t2 select a,2 from t1 where a >= 200 and a < 400;

insert into t2 select a,3 from t1 where a >= 400 and a < 600;

insert into t2 select a,4 from t1 where a >= 600 and a < 800;

insert into t2 select a,5 from t1 where a >= 800 and a < 1001;

explain partitions select * from t2;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	NULL	NULL	NULL	NULL	1010	

explain partitions select * from t2 where a < 801 and a > 200;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p1,p2,p3,p4	ALL	NULL	NULL	NULL	NULL	800	Using where

explain partitions select * from t2 where a < 801 and a > 800;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p4	ALL	NULL	NULL	NULL	NULL	200	Using where

explain partitions select * from t2 where a > 600;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p3,p4	ALL	NULL	NULL	NULL	NULL	400	Using where

explain partitions select * from t2 where a > 600 and b = 1;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p3,p4	ALL	NULL	NULL	NULL	NULL	400	Using where

explain partitions select * from t2 where a > 600 and b = 4;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p3,p4	ALL	NULL	NULL	NULL	NULL	400	Using where

explain partitions select * from t2 where a > 600 and b = 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p3,p4	ALL	NULL	NULL	NULL	NULL	400	Using where

explain partitions select * from t2 where b = 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	NULL	NULL	NULL	NULL	1010	Using where

flush status;

update t2 set b = 100 where b = 6;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1015

flush status;

update t2 set a = 1002 where a = 1001;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1015

flush status;

update t2 set b = 6 where a = 600;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1015

flush status;

update t2 set b = 6 where a > 600 and a < 800;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1015

flush status;

delete from t2 where a > 600;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1015

DROP TABLE IF EXISTS `t2`;

CREATE TABLE `t2` (

`a` int(11) default NULL,

`b` int(11) default NULL,

index (b)

) 

PARTITION BY RANGE (a) (

PARTITION p0 VALUES LESS THAN (200),

PARTITION p1 VALUES LESS THAN (400),

PARTITION p2 VALUES LESS THAN (600),

PARTITION p3 VALUES LESS THAN (800),

PARTITION p4 VALUES LESS THAN (1001));

insert into t2 select a,1 from t1 where a < 100;

insert into t2 select a,2 from t1 where a >= 200 and a < 300;

insert into t2 select a,3 from t1 where a >= 300 and a < 400;

insert into t2 select a,4 from t1 where a >= 400 and a < 500;

insert into t2 select a,5 from t1 where a >= 500 and a < 600;

insert into t2 select a,6 from t1 where a >= 600 and a < 700;

insert into t2 select a,7 from t1 where a >= 700 and a < 800;

insert into t2 select a,8 from t1 where a >= 800 and a < 900;

insert into t2 select a,9 from t1 where a >= 900 and a < 1001;

explain partitions select * from t2;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	NULL	NULL	NULL	NULL	910	

explain partitions select * from t2 where a = 101;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0	ALL	NULL	NULL	NULL	NULL	110	Using where

explain partitions select * from t2 where a = 550;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p2	ALL	NULL	NULL	NULL	NULL	200	Using where

explain partitions select * from t2 where a = 833;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p4	ALL	NULL	NULL	NULL	NULL	200	Using where

explain partitions select * from t2 where (a = 100 OR a = 900);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p4	ALL	NULL	NULL	NULL	NULL	310	Using where

explain partitions select * from t2 where (a > 100 AND a < 600);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3	ALL	NULL	NULL	NULL	NULL	710	Using where

explain partitions select * from t2 where b = 4;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ref	b	b	5	const	76	Using where

explain partitions select * from t2 where b = 6;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ref	b	b	5	const	76	Using where

explain partitions select * from t2 where b in (1,3,5);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

explain partitions select * from t2 where b in (2,4,6);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

explain partitions select * from t2 where b in (7,8,9);

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

explain partitions select * from t2 where b > 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

explain partitions select * from t2 where b > 5 and b < 8;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

explain partitions select * from t2 where b > 5 and b < 7;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	range	b	b	5	NULL	76	Using where

explain partitions select * from t2 where b > 0 and b < 5;

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	p0,p1,p2,p3,p4	ALL	b	NULL	NULL	NULL	910	Using where

flush status;

update t2 set a = 111 where b = 10;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	0

show status like 'Handler_read_key';

Variable_name	Value

Handler_read_key	5

flush status;

update t2 set a = 111 where b in (5,6);

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	915

show status like 'Handler_read_key';

Variable_name	Value

Handler_read_key	0

flush status;

update t2 set a = 222 where b = 7;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	0

show status like 'Handler_read_key';

Variable_name	Value

Handler_read_key	5

flush status;

delete from t2 where b = 7;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	0

show status like 'Handler_read_key';

Variable_name	Value

Handler_read_key	5

flush status;

delete from t2 where b > 5;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1215

show status like 'Handler_read_key';

Variable_name	Value

Handler_read_key	0

show status like 'Handler_read_prev';

Variable_name	Value

Handler_read_prev	0

show status like 'Handler_read_next';

Variable_name	Value

Handler_read_next	0

flush status;

delete from t2 where b < 5 or b > 3;

show status like 'Handler_read_rnd_next';

Variable_name	Value

Handler_read_rnd_next	1215

show status like 'Handler_read_key';

Variable_name	Value

Handler_read_key	0

show status like 'Handler_read_prev';

Variable_name	Value

Handler_read_prev	0

show status like 'Handler_read_next';

Variable_name	Value

Handler_read_next	0

drop table t1, t2;

mysql-test/t/partition_pruning.test

+132 −0

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sql/ha_partition.cc

+191 −120

File changed.

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sql/ha_partition.h

+0 −1
Original line number Diff line number Diff line
@@ -100,7 +100,6 @@ class ha_partition :public handler 
  bool m_create_handler;                 // Handler used to create table

  bool m_is_sub_partitioned;             // Is subpartitioned

  bool m_ordered_scan_ongoing;

  bool m_use_bit_array;



  /*

    We keep track if all underlying handlers are MyISAM since MyISAM has a

sql/handler.h

+0 −1
Original line number Diff line number Diff line
@@ -618,7 +618,6 @@ enum ndb_distribution { ND_KEYHASH= 0, ND_LINHASH= 1 }; 
typedef struct {

  uint32 start_part;

  uint32 end_part;

  bool use_bit_array;

} part_id_range;