rowid_order_innodb.test

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

#
# Test for rowid ordering (and comparison) functions.
# do index_merge select for tables with PK of various types. 
#
--disable_warnings
drop table if exists t1, t2, t3,t4;
--enable_warnings

-- source include/have_innodb.inc

# Signed number as rowid 
create table t1 ( 
  pk1 int not NULL,
  key1 int(11),
  key2 int(11),
  PRIMARY KEY  (pk1),
  KEY key1 (key1),
  KEY key2 (key2)
) engine=innodb; 
insert into t1 values (-5, 1, 1),
  (-100, 1, 1),
  (3, 1, 1),
  (0, 1, 1),
  (10, 1, 1);
explain select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
drop table t1;

# Unsigned numbers as rowids 
create table t1 ( 
  pk1 int unsigned not NULL,
  key1 int(11),
  key2 int(11),
  PRIMARY KEY  (pk1),
  KEY key1 (key1),
  KEY key2 (key2)
) engine=innodb; 
insert into t1 values (0, 1, 1),
  (0xFFFFFFFF, 1, 1),
  (0xFFFFFFFE, 1, 1),
  (1, 1, 1),
  (2, 1, 1);
select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
drop table t1;

# Case-insensitive char(N)
create table t1 ( 
  pk1 char(4) not NULL,
  key1 int(11),
  key2 int(11),
  PRIMARY KEY  (pk1),
  KEY key1 (key1),
  KEY key2 (key2)
) engine=innodb collate latin2_general_ci;
insert into t1 values ('a1', 1, 1),
  ('b2', 1, 1),
  ('A3', 1, 1),
  ('B4', 1, 1);
select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
drop table t1;

# Multi-part PK
create table t1 (
  pk1 int not NULL,
  pk2 char(4) not NULL collate latin1_german1_ci,
  pk3 char(4) not NULL collate latin1_bin,
  key1 int(11),
  key2 int(11),
  PRIMARY KEY  (pk1,pk2,pk3),
  KEY key1 (key1),
  KEY key2 (key2)
) engine=innodb;
insert into t1 values 
  (1, 'u', 'u',        1, 1),
  (1, 'u', char(0xEC), 1, 1),
  (1, 'u', 'x',        1, 1);
insert ignore into t1 select pk1, char(0xEC), pk3, key1, key2  from t1;
insert ignore into t1 select pk1, 'x', pk3, key1, key2  from t1 where pk2='u';
insert ignore into t1 select 2, pk2, pk3, key1, key2  from t1;
select * from t1;
select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;

# Hidden PK
alter table t1 drop primary key;
select * from t1;
select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
drop table t1;

# Variable-length PK
# this is also test for Bug#2688
create table t1  (
  pk1 varchar(8) NOT NULL default '',
  pk2 varchar(4) NOT NULL default '',
  key1 int(11),
  key2 int(11),
  primary key(pk1, pk2),
  KEY key1 (key1),
  KEY key2 (key2)
) engine=innodb;
insert into t1 values ('','empt',2,2),
  ('a','a--a',2,2),
  ('bb','b--b',2,2),
  ('ccc','c--c',2,2),
  ('dddd','d--d',2,2);
select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;

drop table t1;