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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
|
SET @@session.default_storage_engine = 'InnoDB';
create table t1 (a int not null,
b int generated always as (-a) virtual,
c int generated always as (-a) stored);
insert into t1 (a) values (1), (1), (2), (2), (3);
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
create view v1 (d,e) as select abs(b), abs(c) from t1;
select d,e from v1;
d e
1 1
1 1
2 2
2 2
3 3
select is_updatable from information_schema.views where table_name='v1';
is_updatable
NO
explain select d,e from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL X
create algorithm=temptable view v2 (d,e) as select abs(b), abs(c) from t1;
show create view v2;
View Create View character_set_client collation_connection
v2 CREATE ALGORITHM=TEMPTABLE DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS select abs(`t1`.`b`) AS `d`,abs(`t1`.`c`) AS `e` from `t1` latin1 latin1_swedish_ci
select d,e from v2;
d e
1 1
1 1
2 2
2 2
3 3
explain select d,e from v2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL X
2 DERIVED t1 ALL NULL NULL NULL NULL X
create view v3 (d,e) as select d*2, e*2 from v1;
select * from v3;
d e
2 2
2 2
4 4
4 4
6 6
explain select * from v3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL X
drop view v1,v2,v3;
drop table t1;
create table t1 (a int not null,
b int generated always as (-a) virtual,
c int generated always as (-a) stored);
insert into t1 (a) values (1), (2), (3), (1), (2), (3);
create view v1 as select distinct b from t1;
select * from v1;
b
-1
-2
-3
explain select * from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL X
2 DERIVED t1 ALL NULL NULL NULL NULL X Using temporary
select * from t1;
a b c
1 -1 -1
1 -1 -1
2 -2 -2
2 -2 -2
3 -3 -3
3 -3 -3
drop view v1;
create view v1 as select distinct c from t1;
select * from v1;
c
-1
-2
-3
explain select * from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL X
2 DERIVED t1 ALL NULL NULL NULL NULL X Using temporary
select * from t1;
a b c
1 -1 -1
1 -1 -1
2 -2 -2
2 -2 -2
3 -3 -3
3 -3 -3
drop view v1;
drop table t1;
create table t1 (a int not null,
b int generated always as (-a) virtual,
c int generated always as (-a) stored);
insert into t1 (a) values (1), (2), (3), (4);
create view v1 as select b+1 from t1 order by 1 desc limit 2;
select * from v1;
b+1
0
-1
explain select * from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL X
2 DERIVED t1 ALL NULL NULL NULL NULL X Using filesort
drop view v1;
create view v1 as select c+1 from t1 order by 1 desc limit 2;
select * from v1;
c+1
-1
0
explain select * from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL X
2 DERIVED t1 ALL NULL NULL NULL NULL X Using filesort
drop view v1;
drop table t1;
create table t1 (a int,
b int,
c int generated always as (-a) virtual,
d int generated always as (-a) stored,
primary key(a));
insert into t1 (a,b) values (10,2), (20,3), (30,4), (40,5), (50,10);
create view v1 (a,e,f,g) as select a, b+1,c+1,d+1 from t1;
update v1 set a=a+e;
select * from v1 order by a;
a e f g
13 3 -12 -12
24 4 -23 -23
35 5 -34 -34
46 6 -45 -45
61 11 -60 -60
select * from t1 order by a;
a b c d
13 2 -13 -13
24 3 -24 -24
35 4 -35 -35
46 5 -46 -46
61 10 -61 -61
delete from v1;
select * from v1;
a e f g
select * from t1;
a b c d
insert into v1 (a,e) values (60,15);
ERROR HY000: The target table v1 of the INSERT is not insertable-into
drop table t1;
drop view v1;
create table t1 (a int,
b int generated always as (-a) virtual,
c int generated always as (-a) stored,
primary key(a));
insert into t1 (a) values (1), (2), (3);
create view v1 (x,y,z) as select a,b,c from t1 where b < -1;
select t1.a, v1.x, v1.y, v1.z from t1 left join v1 on (t1.b= v1.y);
a x y z
1 NULL NULL NULL
2 2 -2 -2
3 3 -3 -3
drop view v1;
create view v1 (x,y,z) as select a,b,c from t1 where c < -1;
select t1.a, v1.x, v1.y, v1.z from t1 left join v1 on (t1.c= v1.z);
a x y z
1 NULL NULL NULL
2 2 -2 -2
3 3 -3 -3
drop view v1;
drop table t1;
create table t1 (a1 int,
b1 int generated always as (-a1) virtual,
c1 int generated always as (-a1) stored);
create table t2 (a2 int,
b2 int generated always as (-a2) virtual,
c2 int generated always as (-a2) stored);
insert into t1 (a1) values (1), (2);
insert into t2 (a2) values (2), (3);
create view v1 as select * from t1,t2 union all select * from t1,t2;
select * from v1;
a1 b1 c1 a2 b2 c2
1 -1 -1 2 -2 -2
1 -1 -1 2 -2 -2
1 -1 -1 3 -3 -3
1 -1 -1 3 -3 -3
2 -2 -2 2 -2 -2
2 -2 -2 2 -2 -2
2 -2 -2 3 -3 -3
2 -2 -2 3 -3 -3
drop view v1;
drop table t1, t2;
create table t1 (a int,
b int generated always as (-a) virtual,
c int generated always as (-a) stored);
create table t2 like t1;
create view v1 as select a,b,c from t1;
create view v2 as select a,b,c from t2 where b in (select b from v1);
show create view v2;
View Create View character_set_client collation_connection
v2 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS select `t2`.`a` AS `a`,`t2`.`b` AS `b`,`t2`.`c` AS `c` from `t2` where `t2`.`b` in (select `v1`.`b` from `v1`) latin1 latin1_swedish_ci
drop view v2, v1;
drop table t1, t2;
create table t1 (a int,
b int generated always as (-a) virtual,
c int generated always as (-a) stored);
insert into t1 (a) values (1),(1),(2),(2),(3),(3);
create view v1 as select b from t1;
select distinct b from v1;
b
-1
-2
-3
select distinct b from v1 order by b limit 2;
b
-3
-2
select distinct b from t1 order by b limit 2;
b
-3
-2
prepare stmt1 from "select distinct b from v1 order by b limit 2";
execute stmt1;
b
-3
-2
execute stmt1;
b
-3
-2
deallocate prepare stmt1;
drop view v1;
create view v1 as select c from t1;
select distinct c from v1;
c
-1
-2
-3
select distinct c from v1 order by c limit 2;
c
-3
-2
select distinct c from t1 order by c limit 2;
c
-3
-2
prepare stmt1 from "select distinct c from v1 order by c limit 2";
execute stmt1;
c
-3
-2
execute stmt1;
c
-3
-2
deallocate prepare stmt1;
drop view v1;
drop table t1;
create table t1 (a int,
b int generated always as (-a) virtual,
c int generated always as (-a) stored);
create view v1 as select * from t1 where b > -2 && c >-2 with check option;
insert into v1 (a) values (1);
insert into v1 (a) values (3);
ERROR 44000: CHECK OPTION failed `test`.`v1`
insert ignore into v1 (a) values (2),(3),(0);
Warnings:
Warning 1369 CHECK OPTION failed `test`.`v1`
Warning 1369 CHECK OPTION failed `test`.`v1`
select * from t1;
a b c
0 0 0
1 -1 -1
drop view v1;
drop table t1;
#
# MDEV-18166 ASSERT_COLUMN_MARKED_FOR_READ failed on tables with vcols
#
CREATE TABLE t1 (d DATETIME(3), v DATETIME(2) AS (d));
CREATE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 (d) VALUES ('2004-04-19 15:37:39.123'),
('1985-12-24 10:15:08.456');
DELETE FROM v1 ORDER BY v LIMIT 4;
DROP VIEW v1;
DROP TABLE t1;
#
# [duplicate] MDEV-19306 Assertion `marked_for_read()' failed in
# Field_blob::val_str with virtual columns and views
#
CREATE TABLE t1 (a BLOB, b TEXT AS (a) VIRTUAL);
CREATE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 (a) VALUES ('foo'),('bar');
DELETE FROM v1 ORDER BY b LIMIT 2;
DROP VIEW v1;
DROP TABLE t1;
CREATE TABLE t1 (d INT, v TINYINT AS (d));
CREATE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 (d) VALUES ('2004'),('1985') ;
DELETE FROM v1 ORDER BY v LIMIT 4;
DROP VIEW v1;
DROP TABLE t1;
CREATE TABLE t1 (d VARCHAR(64), v VARCHAR(63) AS (d));
CREATE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 (d) VALUES ('2004-04-19 15:37:39.123'),('1985-12-24 10:15:08.456') ;
DELETE FROM v1 ORDER BY v LIMIT 4;
DROP TABLE t1;
DROP VIEW v1;
#
# MDEV-18249 ASSERT_COLUMN_MARKED_FOR_READ failed in ANALYZE TABLE
#
create table t1 (c varchar(3) not null, v varchar(4) as (c) virtual);
insert into t1 (c) values ('a'),('b');
analyze table t1 persistent for columns (v) indexes ();
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
DROP VIEW IF EXISTS v1,v2;
DROP TABLE IF EXISTS t1,t2,t3;
DROP PROCEDURE IF EXISTS p1;
DROP FUNCTION IF EXISTS f1;
DROP TRIGGER IF EXISTS trg1;
DROP TRIGGER IF EXISTS trg2;
set sql_warnings = 0;
|
