create table t1 (c1 int, c2 varchar(255), c3 geometry not null, primary key(c1, c2), spatial index (c3))engine=innodb;
create function rand_string(str_length tinyint unsigned, str_type tinyint unsigned) returns varchar(255)
begin
declare counter int unsigned default 0;
declare const_chars varchar(64) default '0123456789';
declare result varchar(255) default '';
if str_type = 1 then
set const_chars = '0123456789';
elseif str_type = 2 then
set const_chars = 'abcdefghijklmnopqrstuvwxyz';
elseif str_type = 3 then
set const_chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
elseif str_type = 4 then
set const_chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
elseif str_type = 5 then
set const_chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
else
set const_chars = '0123456789';
end if;
while counter < str_length do
set result = concat(result,substr(const_chars,ceil(rand()*(length(const_chars)-1)),1));
set counter = counter + 1;
end while;
return result;
end|
create procedure insert_t1(IN total int)
begin
declare i int default 1;
declare i2 int default 1;
declare str varchar(100) default '';
declare dup_key int default 1;
while i <= total DO
set i2 = floor(0+(rand()*100));
set str = rand_string(i2, 5);
select count(*) into dup_key from t1 where c2 = str and c1 = i;
while dup_key <> 0 do
set i2 = floor(0+(rand()*100));
set str = rand_string(i2, 5);
select count(*) into dup_key from t1 where c2 = str and c1 = i;
end while;
insert into t1 values (i, str, Point(i, i));
set i = i + 1;
end while;
end|
CALL insert_t1(10000);
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
start transaction;
CALL insert_t1(30000);
rollback;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
drop procedure insert_t1;
drop function rand_string;
drop table t1;