初版

build/lib/mysql/mysql-test/include/rowid_order.inc

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+# include/rowid_order.inc
+#
+# Test for rowid ordering (and comparison) functions.
+# do index_merge select for tables with PK of various types.
+#
+# The variable
+#     $engine_type       -- storage engine to be tested
+# has to be set before sourcing this script.
+#
+# Note: The comments/expections refer to InnoDB.
+#       They might be not valid for other storage engines.
+#
+# Last update:
+# 2006-08-02 ML test refactored
+#               old name was t/rowid_order.test
+#               main code went into include/rowid_order.inc
+#
+
+eval SET SESSION STORAGE_ENGINE = $engine_type;
+
+--disable_warnings
+drop table if exists t1, t2, t3,t4;
+--enable_warnings
+
+# 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)
+);
+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)
+);
+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)
+) 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)
+);
+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)
+);
+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;