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MDEV-5177: ha_partition and innodb index intersection produce fewer rows (MySQL Bug#70703)

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(This is attempt at fix #2) (re-commit with fixed typo)
- Moved the testcase from partition_test to partition_innodb.test where it can really work.
- Made ordered index scans over ha_partition tables to satisfy ROR property for 
  the case where underlying table uses extended keys.
This commit is contained in:
Sergey Petrunya
2014-03-11 16:45:08 +01:00
parent 525c00c682
commit cb5b6c7e39
7 changed files with 211 additions and 132 deletions
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39
mysql-test/r/partition_innodb.result
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@ -639,4 +639,43 @@ col1 col2 col3
1 2 2013-03-11 16:33:04
1 2 2013-03-11 16:33:24
DROP TABLE t1;
#
# MDEV-5177: ha_partition and innodb index intersection produce fewer rows (MySQL Bug#70703)
#
create table t1 (
a int not null,
b int not null,
pk int not null,
primary key (pk),
key(a),
key(b)
) engine=innodb partition by hash(pk) partitions 10;
insert into t1 values (1,2,4);
insert into t1 values (1,0,17);
insert into t1 values (1,2,25);
insert into t1 values (10,20,122);
insert into t1 values (10,20,123);
create table t2 (a int);
insert into t2 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
insert into t1 select 1,2, 200 + A.a + 10*B.a + 100*C.a from t2 A, t2 B, t2 C;
insert into t1 select 10+A.a + 10*B.a + 100*C.a + 1000*D.a,
10+A.a + 10*B.a + 100*C.a + 1000*D.a,
2000 + A.a + 10*B.a + 100*C.a + 1000*D.a
from t2 A, t2 B, t2 C ,t2 D;
explain select * from t1 where a=1 and b=2 and pk between 1 and 999999 ;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge PRIMARY,a,b b,a 4,4 NULL # Using intersect(b,a); Using where; Using index
create temporary table t3 as
select * from t1 where a=1 and b=2 and pk between 1 and 999 ;
select count(*) from t3;
count(*)
802
drop table t3;
create temporary table t3 as
select * from t1 ignore index(a,b) where a=1 and b=2 and pk between 1 and 999 ;
select count(*) from t3;
count(*)
802
drop table t3;
drop table t1,t2;
set global default_storage_engine=default;