Run this testcase
--source include/have_partition.inc
--source include/have_innodb.inc
create table ten(a int );
insert into ten values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k(a int );
insert into one_k select A.a + B.a* 10 + C.a * 100 from ten A, ten B, ten C;
create table t1 (
ID bigint (20) NOT NULL AUTO_INCREMENT,
part_id int ,
key_col int ,
col2 int ,
key (key_col),
PRIMARY KEY (ID,part_id)
) ENGINE=InnoDB
PARTITION BY RANGE (part_id)
(PARTITION p1 VALUES LESS THAN (3) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (7) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN (10) ENGINE = InnoDB
);
insert into t1 select
A.a+10*B.a,
A.a,
B.a,
123456
from ten A, ten B;
set optimizer_switch= 'mrr=on' ;
explain
select * from t1 force index (key_col) where key_col < 10;
select * from t1 force index (key_col) where key_col < 10;
drop table ten,one_k,t1;
And it will fail with:
mysqltest: At line 35: query 'select * from t1 force index (key_col) where key_col < 10' failed: 1041: Out of memory.
relates to
MDEV-21068
Test MRR scans over partitioned tables
Closed
Sergei Petrunia
made changes -
2019-09-17 10:11
Field
Original Value
New Value
Description
{code:sql}
--source include/have_partition.inc
--source include/have_innodb.inc
create table ten(a int);
insert into ten values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k(a int);
insert into one_k select A.a + B.a* 10 + C.a * 100 from ten A, ten B, ten C;
create table t1 (
ID bigint(20) NOT NULL AUTO_INCREMENT,
part_id int,
key_col int,
col2 int,
key(key_col),
PRIMARY KEY (ID,part_id)
) ENGINE=InnoDB
PARTITION BY RANGE (part_id)
(PARTITION p1 VALUES LESS THAN (3) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (7) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN (10) ENGINE = InnoDB
);
insert into t1 select
A.a+10*B.a,
A.a,
B.a,
123456
from ten A, ten B;
set optimizer_switch='mrr=on';
explain
select * from t1 force index (key_col) where key_col < 10;
select * from t1 force index (key_col) where key_col < 10;
drop table ten,one_k,t1;
{code}
Run this testcase
{code:sql}
--source include/have_partition.inc
--source include/have_innodb.inc
create table ten(a int);
insert into ten values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k(a int);
insert into one_k select A.a + B.a* 10 + C.a * 100 from ten A, ten B, ten C;
create table t1 (
ID bigint(20) NOT NULL AUTO_INCREMENT,
part_id int,
key_col int,
col2 int,
key(key_col),
PRIMARY KEY (ID,part_id)
) ENGINE=InnoDB
PARTITION BY RANGE (part_id)
(PARTITION p1 VALUES LESS THAN (3) ENGINE = InnoDB,
PARTITION p2 VALUES LESS THAN (7) ENGINE = InnoDB,
PARTITION p3 VALUES LESS THAN (10) ENGINE = InnoDB
);
insert into t1 select
A.a+10*B.a,
A.a,
B.a,
123456
from ten A, ten B;
set optimizer_switch='mrr=on';
explain
select * from t1 force index (key_col) where key_col < 10;
select * from t1 force index (key_col) where key_col < 10;
drop table ten,one_k,t1;
{code}
And it will fail with:
{code}
mysqltest: At line 35: query 'select * from t1 force index (key_col) where key_col < 10' failed: 1041: Out of memory.
{code}
Elena Stepanova
made changes -
2019-09-17 11:00
Assignee
Sergei Petrunia
[ psergey
]
Elena Stepanova
made changes -
2019-11-05 19:30
Fix Version/s
10.3
[ 22126
]
Sergei Petrunia
made changes -
2019-11-16 15:14
Fix Version/s
10.3.21
[ 24014
]
Fix Version/s
10.3
[ 22126
]
Resolution
Fixed
[ 1
]
Status
Open
[ 1
]
Closed
[ 6
]
Sergei Petrunia
made changes -
2019-11-21 07:51
Fix Version/s
10.4.11
[ 24013
]
Fix Version/s
10.5.0
[ 23709
]
Sergei Golubchik
made changes -
2021-12-06 21:50
Workflow
MariaDB v3
[ 99709
]
MariaDB v4
[ 156756
]
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