MySQL 5.6.14 Source Code Document
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partition_double.inc
1 eval create table t1 (a double not null, primary key(a)) engine=$engine
2 partition by key (a) (
3 partition pa1 max_rows=20 min_rows=2,
4 partition pa2 max_rows=30 min_rows=3,
5 partition pa3 max_rows=30 min_rows=4,
6 partition pa4 max_rows=40 min_rows=2);
7 show create table t1;
8 insert into t1 values (-2.2250738585072014E+208), (-2.2250738585072014E-208), (-1.5), (-1), (0), (1.5), (1234.567), (2.2250738585072014E+208);
9 select * from t1;
10 select * from t1 where a=1.5;
11 delete from t1 where a=1.5;
12 select * from t1;
13 drop table t1;
14 
15 eval create table t2 (a double not null, primary key(a)) engine=$engine
16 partition by key (a) partitions 10;
17 show create table t2;
18 insert into t2 values (-2.2250738585072014E+208), (-2.2250738585072014E-208), (-1.5), (-1), (0), (1.5), (1234.567), (2.2250738585072014E+208);
19 select * from t2;
20 select * from t2 where a=1234.567;
21 delete from t2 where a=1234.567;
22 select * from t2;
23 delete from t2;
24 let $count=$maxrows;
25 --echo $maxrows*3 inserts;
26 --disable_query_log
27 while ($count)
28 {
29 eval insert into t2 values ($count);
30 eval insert into t2 values ($count+0.33);
31 eval insert into t2 values ($count+0.75);
32 dec $count;
33 }
34 --enable_query_log
35 select count(*) from t2;
36 drop table t2;