MySQL 5.6.14 Source Code Document
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partition_tinyint.inc
1 eval create table t1 (a tinyint unsigned not null, primary key(a)) engine=$engine
2 partition by key (a) (
3 partition pa1 max_rows=20 min_rows=2,
4 partition pa2 max_rows=30 min_rows=3,
5 partition pa3 max_rows=30 min_rows=4,
6 partition pa4 max_rows=40 min_rows=2);
7 show create table t1;
8 insert into t1 values (255), (254), (253), (252), (1), (2), (128);
9 --sorted_result
10 select * from t1;
11 select * from t1 where a=253;
12 delete from t1 where a=253;
13 --sorted_result
14 select * from t1;
15 drop table t1;
16 
17 eval create table t2 (a tinyint unsigned not null, primary key(a)) engine=$engine
18 partition by key (a) partitions 8;
19 show create table t2;
20 insert into t2 values (255), (254), (253), (252);
21 --sorted_result
22 select * from t2;
23 select * from t2 where a=253;
24 delete from t2 where a=253;
25 --sorted_result
26 select * from t2;
27 delete from t2;
28 let $count=255;
29 --echo 255 inserts;
30 --disable_query_log
31 while ($count)
32 {
33 eval insert into t2 values ($count);
34 dec $count;
35 }
36 --enable_query_log
37 select count(*) from t2;
38 drop table t2;
39 
40 eval create table t3 (a tinyint not null, primary key(a)) engine=$engine
41 partition by key (a) partitions 7;
42 show create table t3;
43 insert into t3 values (127), (126), (125), (124), (-128), (-127), (1), (-1), (0);
44 --sorted_result
45 select * from t3;
46 select * from t3 where a=125;
47 delete from t3 where a=125;
48 --sorted_result
49 select * from t3;
50 drop table t3;