MySQL 5.6.14 Source Code Document
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index_merge_single_col_setup.inc
1 #
2 # Creating table with single column index setup
3 #
4 
5 --disable_warnings
6 DROP TABLE IF EXISTS t1;
7 --enable_warnings
8 
9 CREATE TABLE t1
10 (
11  key1 INT NOT NULL,
12  key2 INT NOT NULL,
13  key3 INT NOT NULL,
14  key4 INT NOT NULL,
15  key5 INT,
16  key6 INT,
17  key7 INT NOT NULL,
18  key8 INT NOT NULL,
19  INDEX i1(key1),
20  INDEX i2(key2),
21  INDEX i3(key3),
22  INDEX i4(key4),
23  INDEX i5(key5),
24  INDEX i6(key6)
25 );
26 
27 --disable_query_log
28 
29 # inserting values
30 
31 INSERT INTO t1 VALUES ( 1,1,1,1,1,1,1,1),(2,2,2,2,2,2,2,2);
32 
33 let $i=10;
34 set @d=2;
35 while($i)
36 {
37  INSERT INTO t1 SELECT key1+@d, key2+@d, key3+@d, key4+@d,
38  key5+@d, key6+@d, key7+@d, key8+@d FROM t1;
39  set @d=@d*2;
40  dec $i;
41 }
42 
43 
44 # inserting null values.
45 
46 let $i=5;
47 set @d=5;
48 while($i)
49 {
50  INSERT INTO t1 VALUES (key1+@d, key2+@d, key3+@d, key4+@d,
51  key5+@d, NULL, key7+@d, key8+@d);
52  set @d=@d*2;
53  dec $i;
54 }
55 
56 let $i=4;
57 set @d=6;
58 while($i)
59 {
60  INSERT INTO t1 VALUES (key1+@d, key2+@d, key3+@d, key4+@d,
61  NULL, key6+@d, key7+@d, key8+@d);
62  set @d=@d*2;
63  dec $i;
64 }
65 
66 --enable_query_log
67 
68 # The following statement analyzes and
69 # stores the key distribution for a table.
70 
71 ANALYZE TABLE t1;
72