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mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00

Merge svojtovich@bk-internal.mysql.com:/home/bk/mysql-5.1-engines

into  april.(none):/home/svoj/devel/mysql/merge/mysql-5.1-engines
This commit is contained in:
svoj@april.(none)
2006-09-18 20:43:36 +05:00
7 changed files with 127 additions and 17 deletions

View File

@ -284,6 +284,46 @@ kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND kp5 = 'R ';
COUNT(*)
1
drop table t1;
create table t1
(
key1 int not null,
key2 int not null default 0,
key3 int not null default 0
);
insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
set @d=8;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
alter table t1 add index i2(key2);
alter table t1 add index i3(key3);
update t1 set key2=key1,key3=key1;
explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i2,i3 i3,i2 4,4 NULL 9 Using sort_union(i3,i2); Using where
select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
key1 key2 key3
31 31 31
32 32 32
33 33 33
34 34 34
35 35 35
36 36 36
37 37 37
38 38 38
39 39 39
drop table t1;
#---------------- 2-sweeps read Index merge test 2 -------------------------------
SET SESSION STORAGE_ENGINE = InnoDB;
drop table if exists t1;

View File

@ -982,6 +982,46 @@ kp1='279' AND kp2='ELM0678' AND kp3='6' AND kp4='10' AND kp5 = 'R ';
COUNT(*)
1
drop table t1;
create table t1
(
key1 int not null,
key2 int not null default 0,
key3 int not null default 0
);
insert into t1(key1) values (1),(2),(3),(4),(5),(6),(7),(8);
set @d=8;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
insert into t1 (key1) select key1+@d from t1;
set @d=@d*2;
alter table t1 add index i2(key2);
alter table t1 add index i3(key3);
update t1 set key2=key1,key3=key1;
explain select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge i2,i3 i3,i2 4,4 NULL 11 Using sort_union(i3,i2); Using where
select * from t1 where (key3 > 30 and key3<35) or (key2 >32 and key2 < 40);
key1 key2 key3
31 31 31
32 32 32
33 33 33
34 34 34
35 35 35
36 36 36
37 37 37
38 38 38
39 39 39
drop table t1;
#---------------- 2-sweeps read Index merge test 2 -------------------------------
SET SESSION STORAGE_ENGINE = MyISAM;
drop table if exists t1;

View File

@ -99,8 +99,8 @@ CREATE TABLE `t2` (
`id4` INT NOT NULL,
UNIQUE (`id2`,`id4`),
KEY (`id1`)
) ENGINE=InnoDB;
INSERT INTO `t2`(`id1`,`id2`,`id3`,`id4`) VALUES
);
INSERT INTO `t2`(`id1`,`id2`,`id3`,`id4`) VALUES
(1,1,1,0),
(1,1,2,1),
(5,1,2,2),
@ -271,6 +271,25 @@ explain select distinct f1, f2 from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range NULL PRIMARY 5 NULL 3 Using index for group-by; Using temporary
drop table t1;
CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
INDEX (name));
CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11));
ALTER TABLE t2 ADD FOREIGN KEY (fkey) REFERENCES t2(id);
INSERT INTO t1 VALUES (1,'A1'),(2,'A2'),(3,'B');
INSERT INTO t2 VALUES (1,1),(2,2),(3,2),(4,3),(5,3);
EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
WHERE t1.name LIKE 'A%';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index PRIMARY,name name 23 NULL 3 Using where; Using index
1 SIMPLE t2 ref fkey fkey 5 test.t1.id 1 Using where; Using index
EXPLAIN
SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
WHERE t1.name LIKE 'A%' OR FALSE;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index NULL fkey 5 NULL 5 Using index
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.fkey 1 Using where
DROP TABLE t1,t2;
CREATE TABLE t1 (a int, b int);
insert into t1 values (1,1),(1,2);
CREATE TABLE t2 (primary key (a)) select * from t1;
@ -340,7 +359,7 @@ CREATE TABLE `t2` (
`c` int(11) default NULL,
PRIMARY KEY (`k`),
UNIQUE KEY `idx_1` (`a`)
) ENGINE=InnoDB;
);
insert into t2 ( a ) values ( 6 ) on duplicate key update c =
ifnull( c,
0 ) + 1;