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
|
create function get_index_id(tbl_id int, index_name char(100))
returns int
begin
declare res int;
select index_id into res from information_schema.innodb_sys_indexes where
name=index_name and table_id = tbl_id;
return res;
end|
create table t (
pk int primary key,
a int,
b int,
c int,
unique index a_key (a),
key c_key (c)
) engine=innodb stats_persistent=1;
insert into t values (1, 1, 1, 1);
set @table_id = (select table_id from information_schema.innodb_sys_tables where name='test/t');
set @a_key_id = get_index_id(@table_id, 'a_key');
set @c_key_id = get_index_id(@table_id, 'c_key');
set @primary_id = get_index_id(@table_id, 'primary');
select distinct(index_name) from mysql.innodb_index_stats where table_name = 't';
index_name
PRIMARY
a_key
c_key
alter table t
drop index a_key,
add unique index a_key_strikes_back (a);
select distinct(index_name) from mysql.innodb_index_stats where table_name = 't';
index_name
PRIMARY
a_key_strikes_back
c_key
check table t;
Table Op Msg_type Msg_text
test.t check status OK
select @a_key_id = get_index_id(@table_id, 'a_key_strikes_back'),
@c_key_id = get_index_id(@table_id, 'c_key'),
@primary_id = get_index_id(@table_id, 'primary');
@a_key_id = get_index_id(@table_id, 'a_key_strikes_back') @c_key_id = get_index_id(@table_id, 'c_key') @primary_id = get_index_id(@table_id, 'primary')
1 1 1
set @a_key_strikes_back_id = get_index_id(@table_id, 'a_key_strikes_back');
set @c_key_id = get_index_id(@table_id, 'c_key');
set @primary_id = get_index_id(@table_id, 'primary');
alter table t
drop index a_key_strikes_back,
add unique index a_key_returns (a),
drop primary key,
add primary key (pk),
add unique index b_key (b);
check table t;
Table Op Msg_type Msg_text
test.t check status OK
select @a_key_strikes_back_id = get_index_id(@table_id, 'a_key_returns'),
@c_key_id = get_index_id(@table_id, 'c_key'),
@primary_id = get_index_id(@table_id, 'primary');
@a_key_strikes_back_id = get_index_id(@table_id, 'a_key_returns') @c_key_id = get_index_id(@table_id, 'c_key') @primary_id = get_index_id(@table_id, 'primary')
1 1 1
set @a_key_returns_id = get_index_id(@table_id, 'a_key_returns');
set @b_key_id = get_index_id(@table_id, 'b_key');
set @c_key_id = get_index_id(@table_id, 'c_key');
set @primary_id = get_index_id(@table_id, 'primary');
alter table t
drop key c_key,
add key c_key2 (c);
check table t;
Table Op Msg_type Msg_text
test.t check status OK
select @a_key_returns_id = get_index_id(@table_id, 'a_key_returns'),
@b_key_id = get_index_id(@table_id, 'b_key'),
@c_key_id = get_index_id(@table_id, 'c_key2'),
@primary_id = get_index_id(@table_id, 'primary');
@a_key_returns_id = get_index_id(@table_id, 'a_key_returns') @b_key_id = get_index_id(@table_id, 'b_key') @c_key_id = get_index_id(@table_id, 'c_key2') @primary_id = get_index_id(@table_id, 'primary')
1 1 1 1
drop table t;
create table errors (
a int,
unique key a_key (a),
b int
) engine=innodb;
alter table errors
drop key a_key,
drop key a_key,
add unique key a_key2 (a);
ERROR 42000: Can't DROP INDEX `a_key`; check that it exists
alter table errors
drop key a_key,
drop key a_key2,
add unique key a_key2 (a);
ERROR 42000: Can't DROP INDEX `a_key2`; check that it exists
alter table errors
add key b_key (b),
drop key b_key,
add key bb_key (b);
ERROR 42000: Can't DROP INDEX `b_key`; check that it exists
alter table errors
drop key a_key,
add key a_key2 (a),
drop key a_key,
add key a_key2 (a);
ERROR 42000: Can't DROP INDEX `a_key`; check that it exists
drop table errors;
create table corrupted (
a int,
key a_key (a)
) engine=innodb;
insert into corrupted values (1);
select * from corrupted;
a
1
SET @save_dbug = @@SESSION.debug_dbug;
SET debug_dbug = '+d,dict_set_index_corrupted';
check table corrupted;
Table Op Msg_type Msg_text
test.corrupted check Warning InnoDB: Index a_key is marked as corrupted
test.corrupted check error Corrupt
SET debug_dbug = @save_dbug;
select * from corrupted;
ERROR HY000: Index corrupted is corrupted
alter table corrupted
drop key a_key,
add key a_key2 (a);
ERROR HY000: Index a_key is corrupted
alter table corrupted
drop key a_key;
select * from corrupted;
a
1
check table corrupted;
Table Op Msg_type Msg_text
test.corrupted check status OK
drop table corrupted;
create table t (
a int,
unique key a_key (a)
) engine=innodb stats_persistent=1;
SET @save_dbug = @@SESSION.debug_dbug;
SET debug_dbug = '+d,ib_rename_index_fail1';
alter table t
drop key a_key,
add unique key a_key2 (a),
algorithm=instant;
ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
SET debug_dbug = @save_dbug;
alter table t
drop key a_key,
add unique key `GEN_CLUST_INDEX` (a),
algorithm=instant;
ERROR 42000: Incorrect index name 'GEN_CLUST_INDEX'
show create table t;
Table Create Table
t CREATE TABLE `t` (
`a` int(11) DEFAULT NULL,
UNIQUE KEY `a_key` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci STATS_PERSISTENT=1
drop table t;
create table rename_column_and_index (
a int,
unique index a_key(a)
) engine=innodb;
insert into rename_column_and_index values (1), (3);
alter table rename_column_and_index
change a aa int,
drop key a_key,
add unique key aa_key(aa),
algorithm=instant;
show create table rename_column_and_index;
Table Create Table
rename_column_and_index CREATE TABLE `rename_column_and_index` (
`aa` int(11) DEFAULT NULL,
UNIQUE KEY `aa_key` (`aa`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
check table rename_column_and_index;
Table Op Msg_type Msg_text
test.rename_column_and_index check status OK
drop table rename_column_and_index;
#
# MDEV-19189: ASAN memcpy-param-overlap in fill_alter_inplace_info upon adding indexes
#
CREATE TABLE t1 (f1 INT, f2 INT, f3 INT);
ALTER TABLE t1 ADD FOREIGN KEY f (f2) REFERENCES xx(f2);
ALTER TABLE t1 ADD FOREIGN KEY (f2) REFERENCES t1(f2), ADD KEY (f3), ADD KEY (f1);
DROP TABLE t1;
#
# MDEV-21669 InnoDB: Table ... contains <n> indexes inside InnoDB, which is different from the number of indexes <n> defined in the MariaDB
#
CREATE TABLE t1 (col_int INTEGER, col_char CHAR(20), col_varchar VARCHAR(500)) ENGINE=InnoDB;
SET @table_id = (SELECT table_id FROM information_schema.innodb_sys_tables WHERE name='test/t1');
ALTER TABLE t1 ADD KEY idx3 (col_varchar(9)), ADD KEY idX2 (col_char(9));
SET @idx3_key_id = get_index_id(@table_id, 'iDx3');
ALTER TABLE t1 DROP KEY iDx3, ADD KEY Idx3 (col_varchar(9));
SELECT @idx3_key_id = get_index_id(@table_id, 'Idx3');
@idx3_key_id = get_index_id(@table_id, 'Idx3')
1
CHECK TABLE t1 EXTENDED ;
Table Op Msg_type Msg_text
test.t1 check status OK
DROP TABLE t1;
DROP FUNCTION get_index_id;
#
# MDEV-23356 InnoDB: Failing assertion: field->col->mtype == type, crash or ASAN failures in row_sel_convert_mysql_key_to_innobase, InnoDB indexes are inconsistent after INDEX changes
#
CREATE TABLE t1 (a INT, b INT, c CHAR(8),
KEY ind1(c), KEY ind2(b)) ENGINE=InnoDB STATS_PERSISTENT=1;
INSERT INTO t1 SELECT 1, 1, 'a' FROM seq_1_to_100;
SELECT table_name, index_name, stat_name FROM mysql.innodb_index_stats;
table_name index_name stat_name
t1 GEN_CLUST_INDEX n_diff_pfx01
t1 GEN_CLUST_INDEX n_leaf_pages
t1 GEN_CLUST_INDEX size
t1 ind1 n_diff_pfx01
t1 ind1 n_diff_pfx02
t1 ind1 n_leaf_pages
t1 ind1 size
t1 ind2 n_diff_pfx01
t1 ind2 n_diff_pfx02
t1 ind2 n_leaf_pages
t1 ind2 size
ALTER TABLE t1 DROP INDEX ind2, ADD INDEX ind3(b),
DROP INDEX ind1, ADD INDEX ind2(c);
SELECT table_name, index_name, stat_name FROM mysql.innodb_index_stats;
table_name index_name stat_name
t1 GEN_CLUST_INDEX n_diff_pfx01
t1 GEN_CLUST_INDEX n_leaf_pages
t1 GEN_CLUST_INDEX size
t1 ind2 n_diff_pfx01
t1 ind2 n_diff_pfx02
t1 ind2 n_leaf_pages
t1 ind2 size
t1 ind3 n_diff_pfx01
t1 ind3 n_diff_pfx02
t1 ind3 n_leaf_pages
t1 ind3 size
ALTER TABLE t1 DROP b, FORCE;
SELECT table_name, index_name, stat_name FROM mysql.innodb_index_stats;
table_name index_name stat_name
t1 GEN_CLUST_INDEX n_diff_pfx01
t1 GEN_CLUST_INDEX n_leaf_pages
t1 GEN_CLUST_INDEX size
t1 ind2 n_diff_pfx01
t1 ind2 n_diff_pfx02
t1 ind2 n_leaf_pages
t1 ind2 size
UPDATE t1 SET a = 1 WHERE c = 'foo';
DROP TABLE t1;
SELECT table_name, index_name, stat_name FROM mysql.innodb_index_stats;
table_name index_name stat_name
|