1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
################################################################################
# inc/gcol_non_stored_columns.inc #
# #
# Purpose: #
# Ensure that MySQL behaviour is consistent irrelevant of #
# - the place of a non-stored column among other columns, #
# - the total number of non-stored fields. #
# #
#------------------------------------------------------------------------------#
# Original Author: Andrey Zhakov #
# Original Date: 2008-09-04 #
# Change Author: #
# Change Date: #
# Change: #
################################################################################
--echo # Case 1. All non-stored columns.
eval create $opt_tmp table t1 (a int generated always as (2+3) virtual);
insert into t1 values (default);
select * from t1;
insert into t1 values (default);
select * from t1;
drop table t1;
--echo # Case 2. CREATE
--echo # - Column1: "real"
--echo # - Column 2: virtual non-stored
eval create $opt_tmp table t1 (a int, b int generated always as (-a) virtual);
insert into t1 values (1,default);
select * from t1;
insert into t1 values (2,default);
select * from t1 order by a;
drop table t1;
--echo # Case 3. CREATE
--echo # - Column1: "real"
--echo # - Column 2: virtual stored
eval create $opt_tmp table t1 (a int, b int generated always as (-a) stored);
insert into t1 values (1,default);
select * from t1;
insert into t1 values (2,default);
select * from t1 order by a;
drop table t1;
--echo # Case 4. CREATE
--echo # - Column1: virtual non-stored
--echo # - Column2: "real"
eval create $opt_tmp table t1 (a int generated always as (-b) virtual, b int);
insert into t1 values (default,1);
select * from t1;
insert into t1 values (default,2);
select * from t1 order by a;
drop table t1;
--echo # Case 5. CREATE
--echo # - Column1: virtual stored
--echo # - Column2: "real"
eval create $opt_tmp table t1 (a int generated always as (-b) stored, b int);
insert into t1 values (default,1);
select * from t1;
insert into t1 values (default,2);
select * from t1 order by a;
drop table t1;
--echo # Case 6. CREATE
--echo # - Column1: "real"
--echo # - Column2: virtual non-stored
--echo # - Column3: virtual stored
eval create $opt_tmp table t1 (a int, b int generated always as (-a), c int generated always as (-a) stored);
insert into t1 values (1,default,default);
select * from t1;
insert into t1 values (2,default,default);
select * from t1 order by a;
drop table t1;
--echo # Case 7. ALTER. Modify virtual stored -> virtual non-stored
eval create $opt_tmp table t1 (a int, b int generated always as (a % 2) stored);
--error ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN
alter table t1 modify b int generated always as (a % 2) virtual;
show create table t1;
drop table t1;
--echo # Case 8. ALTER. Modify virtual non-stored -> virtual stored
eval create $opt_tmp table t1 (a int, b int generated always as (a % 2) virtual);
--error ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN
alter table t1 modify b int generated always as (a % 2) stored;
show create table t1;
drop table t1;
--echo # Case 9. CREATE LIKE
--echo # - Column1: "real"
--echo # - Column2: virtual non-stored
--echo # - Column3: virtual stored
eval create $opt_tmp table t1 (a int, b int generated always as (-a), c int generated always as (-a) stored);
eval create $opt_tmp table t2 like t1;
insert into t2 values (1,default,default);
select * from t2;
insert into t2 values (2,default,default);
select * from t2 order by a;
drop table t2;
drop table t1;
--echo # Case 10. ALTER. Dropping a virtual non-stored column.
--echo # - Column1: virtual non-stored
--echo # - Column2: "real"
eval create $opt_tmp table t1 (a int generated always as (-b) virtual, b int, c varchar(5));
insert into t1 values (default,1,'v1');
insert into t1 values (default,2,'v2');
select * from t1 order by b;
alter table t1 drop column a;
select * from t1 order by b;
show create table t1;
drop table t1;
--echo # Case 11. ALTER. Dropping a virtual stored column.
--echo # - Column1: virtual stored
--echo # - Column2: "real"
eval create $opt_tmp table t1 (a int generated always as (-b) stored, b int, c char(5));
insert into t1 values (default,1,'v1');
insert into t1 values (default,2,'v2');
select * from t1 order by b;
alter table t1 drop column a;
select * from t1 order by b;
show create table t1;
drop table t1;
--echo # Case 12. ALTER. Adding a new virtual non-stored column.
eval create $opt_tmp table t1 (a int, b datetime);
insert into t1 values (1,'2008-09-04');
insert into t1 values (2,'2008-09-05');
select * from t1 order by a;
alter table t1 add column c int generated always as (dayofyear(b)) virtual after a;
select * from t1 order by a;
show create table t1;
drop table t1;
--echo # Case 13. ALTER. Adding a new virtual stored column.
eval create $opt_tmp table t1 (a int, b datetime);
insert into t1 values (1,'2008-09-04');
insert into t1 values (2,'2008-09-05');
select * from t1 order by a;
alter table t1 add column c int generated always as (dayofyear(b)) stored after a;
select * from t1 order by a;
show create table t1;
drop table t1;
--echo # Case 15. ALTER. Changing the expression of a virtual non-stored column.
eval create $opt_tmp table t1 (a int, b datetime, c int generated always as (week(b)) virtual);
insert into t1 values (1,'2008-09-04',default);
insert into t1 values (2,'2008-09-05',default);
select * from t1 order by a;
alter table t1 change column c c int generated always as (week(b,1)) virtual;
select * from t1 order by a;
show create table t1;
drop table t1;
|
