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
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
|
set sql_mode="";
drop database if exists events_test;
create database events_test;
use events_test;
create event e_26 on schedule at '2027-01-01 00:00:00' disable do set @a = 5;
select db, name, body, definer, convert_tz(execute_at, 'UTC', 'SYSTEM'), on_completion from mysql.event;
db name body definer convert_tz(execute_at, 'UTC', 'SYSTEM') on_completion
events_test e_26 set @a = 5 root@localhost 2027-01-01 00:00:00 DROP
drop event e_26;
create event e_26 on schedule at NULL disable do set @a = 5;
ERROR HY000: Incorrect AT value: 'NULL'
create event e_26 on schedule at 'definitely not a datetime' disable do set @a = 5;
ERROR HY000: Incorrect AT value: 'definitely not a datetime'
set names utf8;
create event задачка on schedule every 123 minute starts now() ends now() + interval 1 month do select 1;
drop event задачка;
"DISABLE the scheduler. Testing that it does not work when the variable is 0"
set global event_scheduler=off;
select definer, name, db from mysql.event;
definer name db
select get_lock("test_lock1", 20);
get_lock("test_lock1", 20)
1
create event закачка on schedule every 10 hour do select get_lock("test_lock1", 20);
"Should return 1 row"
select definer, name, db from mysql.event;
definer name db
root@localhost закачка events_test
"Should be only 0 process"
select /*1*/ user, host, db, command, state, info
from information_schema.processlist
where (user='event_scheduler')
order by info;
user host db command state info
select release_lock("test_lock1");
release_lock("test_lock1")
1
drop event закачка;
"Should have 0 events"
select count(*) from mysql.event;
count(*)
0
"ENABLE the scheduler and get a lock"
set global event_scheduler=on;
select get_lock("test_lock2", 20);
get_lock("test_lock2", 20)
1
"Create an event which tries to acquire a mutex. The event locks on the mutex"
create event закачка on schedule every 10 hour do select get_lock("test_lock2", 20);
"Should have only 2 processes: the scheduler and the locked event"
select /*2*/ user, host, db, command, state, info
from information_schema.processlist
where (info like "select get_lock%" OR user='event_scheduler')
order by info;
user host db command state info
event_scheduler localhost NULL Daemon Waiting for next activation NULL
root localhost events_test Connect User lock select get_lock("test_lock2", 20)
"Release the mutex, the event worker should finish."
select release_lock("test_lock2");
release_lock("test_lock2")
1
drop event закачка;
set global event_scheduler=1;
select get_lock("test_lock2_1", 20);
get_lock("test_lock2_1", 20)
1
create event закачка21 on schedule every 10 hour do select get_lock("test_lock2_1", 20);
"Should have only 2 processes: the scheduler and the locked event"
select /*3*/ user, host, db, command, state, info
from information_schema.processlist
where (info like "select get_lock%" OR user='event_scheduler')
order by info;
user host db command state info
event_scheduler localhost NULL Daemon Waiting for next activation NULL
root localhost events_test Connect User lock select get_lock("test_lock2_1", 20)
set global event_scheduler=off;
"Should have only our process now:"
select /*4*/ user, host, db, command, state, info
from information_schema.processlist
where (info like "select get_lock%" OR user='event_scheduler')
order by info;
user host db command state info
root localhost events_test Connect User lock select get_lock("test_lock2_1", 20)
select release_lock("test_lock2_1");
release_lock("test_lock2_1")
1
drop event закачка21;
create table t_16 (s1 int);
create trigger t_16_bi before insert on t_16 for each row create event e_16 on schedule every 1 second do set @a=5;
ERROR HY000: Recursion of EVENT DDL statements is forbidden when body is present
drop table t_16;
create event white_space
on schedule every 10 hour
disable
do
select 1;
select event_schema, event_name, definer, event_definition from information_schema.events where event_name='white_space';
event_schema event_name definer event_definition
events_test white_space root@localhost select 1
drop event white_space;
create event white_space on schedule every 10 hour disable do
select 2;
select event_schema, event_name, definer, event_definition from information_schema.events where event_name='white_space';
event_schema event_name definer event_definition
events_test white_space root@localhost select 2
drop event white_space;
create event white_space on schedule every 10 hour disable do select 3;
select event_schema, event_name, definer, event_definition from information_schema.events where event_name='white_space';
event_schema event_name definer event_definition
events_test white_space root@localhost select 3
drop event white_space;
create event e1 on schedule every 1 year do set @a = 5;
create table t1 (s1 int);
create trigger t1_ai after insert on t1 for each row show create event e1;
ERROR 0A000: Not allowed to return a result set from a trigger
drop table t1;
drop event e1;
SHOW EVENTS FROM aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;
ERROR 42000: Incorrect database name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
SHOW EVENTS FROM ``;
ERROR 42000: Incorrect database name ''
SHOW EVENTS FROM `events\\test`;
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
LOCK TABLES mode.
create table t1 (a int);
create event e1 on schedule every 10 hour do select 1;
lock table t1 read;
show create event e1;
Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
e1 SYSTEM CREATE DEFINER=`root`@`localhost` EVENT `e1` ON SCHEDULE EVERY 10 HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
select event_name from information_schema.events;
event_name
e1
create event e2 on schedule every 10 hour do select 1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 disable;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 rename to e3;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e2;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
unlock tables;
lock table t1 write;
show create event e1;
Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
e1 SYSTEM CREATE DEFINER=`root`@`localhost` EVENT `e1` ON SCHEDULE EVERY 10 HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
select event_name from information_schema.events;
event_name
e1
create event e2 on schedule every 10 hour do select 1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 disable;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 rename to e3;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e2;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
unlock tables;
lock table t1 read, mysql.event read;
show create event e1;
Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
e1 SYSTEM CREATE DEFINER=`root`@`localhost` EVENT `e1` ON SCHEDULE EVERY 10 HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
select event_name from information_schema.events;
event_name
e1
create event e2 on schedule every 10 hour do select 1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 disable;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 rename to e3;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e2;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
unlock tables;
lock table t1 write, mysql.event read;
show create event e1;
Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
e1 SYSTEM CREATE DEFINER=`root`@`localhost` EVENT `e1` ON SCHEDULE EVERY 10 HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
select event_name from information_schema.events;
event_name
e1
create event e2 on schedule every 10 hour do select 1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 disable;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 rename to e3;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e2;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
unlock tables;
lock table t1 read, mysql.event write;
ERROR HY000: You can't combine write-locking of system tables with other tables or lock types
lock table t1 write, mysql.event write;
ERROR HY000: You can't combine write-locking of system tables with other tables or lock types
lock table mysql.event write;
show create event e1;
Event sql_mode time_zone Create Event character_set_client collation_connection Database Collation
e1 SYSTEM CREATE DEFINER=`root`@`localhost` EVENT `e1` ON SCHEDULE EVERY 10 HOUR STARTS '#' ON COMPLETION NOT PRESERVE ENABLE DO select 1 utf8 utf8_general_ci latin1_swedish_ci
select event_name from information_schema.events;
event_name
e1
create event e2 on schedule every 10 hour do select 1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 disable;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
alter event e2 rename to e3;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e3;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
drop event e1;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
unlock tables;
drop event e1;
Make sure we have left no events
select event_name from information_schema.events;
event_name
Events in sub-statements, events and prelocking
create event e1 on schedule every 10 hour do select 1;
create function f1() returns int
begin
show create event e1;
return 1;
end|
ERROR 0A000: Not allowed to return a result set from a function
create trigger trg before insert on t1 for each row
begin
show create event e1;
end|
ERROR 0A000: Not allowed to return a result set from a trigger
create function f1() returns int
begin
select event_name from information_schema.events;
return 1;
end|
ERROR 0A000: Not allowed to return a result set from a function
create trigger trg before insert on t1 for each row
begin
select event_name from information_schema.events;
end|
ERROR 0A000: Not allowed to return a result set from a trigger
create function f1() returns int
begin
create event e2 on schedule every 10 hour do select 1;
return 1;
end|
ERROR HY000: Recursion of EVENT DDL statements is forbidden when body is present
create function f1() returns int
begin
alter event e1 rename to e2;
return 1;
end|
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger
create function f1() returns int
begin
drop event e2;
return 1;
end|
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger
----------------------------------------------------------------------
create trigger trg before insert on t1 for each row
begin
set new.a= f1();
end|
create function f1() returns int
begin
call p1();
return 0;
end|
create procedure p1()
begin
select event_name from information_schema.events;
end|
insert into t1 (a) values (1)|
ERROR 0A000: Not allowed to return a result set from a trigger
drop procedure p1|
create procedure p1()
begin
show create event e1;
end|
insert into t1 (a) values (1)|
ERROR 0A000: Not allowed to return a result set from a trigger
drop procedure p1|
create procedure p1()
begin
create temporary table tmp select event_name from information_schema.events;
end|
expected to work, since we redirect the output into a tmp table
insert into t1 (a) values (1)|
select * from tmp|
event_name
e1
drop temporary table tmp|
drop procedure p1|
create procedure p1()
begin
alter event e1 rename to e2;
end|
insert into t1 (a) values (1)|
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger
drop procedure p1|
create procedure p1()
begin
drop event e1;
end|
insert into t1 (a) values (1)|
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger
drop table t1|
drop event e1|
set names utf8;
create event имя_события_в_кодировке_утф8_длиной_больше_чем_48 on schedule every 2 year do select 1;
select EVENT_NAME from information_schema.events
where event_schema='test';
EVENT_NAME
drop event имя_события_в_кодировке_утф8_длиной_больше_чем_48;
create event
очень_очень_очень_очень_очень_очень_очень_очень_длинная_строка_66
on schedule every 2 year do select 1;
ERROR 42000: Identifier name 'очень_очень_очень_очень_очень_очень_очень_очень_длинна' is too long
create event event_35981 on schedule every 6 month on completion preserve
disable
do
select 1;
The following SELECTs should all give 1
select count(*) from information_schema.events
where event_schema = database() and event_name = 'event_35981' and
on_completion = 'PRESERVE';
count(*)
1
alter event event_35981 enable;
select count(*) from information_schema.events
where event_schema = database() and event_name = 'event_35981' and
on_completion = 'PRESERVE';
count(*)
1
alter event event_35981 on completion not preserve;
select count(*) from information_schema.events
where event_schema = database() and event_name = 'event_35981' and
on_completion = 'NOT PRESERVE';
count(*)
1
alter event event_35981 disable;
select count(*) from information_schema.events
where event_schema = database() and event_name = 'event_35981' and
on_completion = 'NOT PRESERVE';
count(*)
1
alter event event_35981 on completion preserve;
select count(*) from information_schema.events
where event_schema = database() and event_name = 'event_35981' and
on_completion = 'PRESERVE';
count(*)
1
drop event event_35981;
create event event_35981 on schedule every 6 month disable
do
select 1;
select count(*) from information_schema.events
where event_schema = database() and event_name = 'event_35981' and
on_completion = 'NOT PRESERVE';
count(*)
1
drop event event_35981;
create event event_35981 on schedule every 1 hour starts current_timestamp
on completion not preserve
do
select 1;
alter event event_35981 on schedule every 1 hour starts '1999-01-01 00:00:00'
ends '1999-01-02 00:00:00';
ERROR HY000: Event execution time is in the past and ON COMPLETION NOT PRESERVE is set. The event was not changed. Specify a time in the future
drop event event_35981;
create event event_35981 on schedule every 1 hour starts current_timestamp
on completion not preserve
do
select 1;
alter event event_35981 on schedule every 1 hour starts '1999-01-01 00:00:00'
ends '1999-01-02 00:00:00' on completion preserve;
Warnings:
Note 1544 Event execution time is in the past. Event has been disabled
drop event event_35981;
create event event_35981 on schedule every 1 hour starts current_timestamp
on completion preserve
do
select 1;
alter event event_35981 on schedule every 1 hour starts '1999-01-01 00:00:00'
ends '1999-01-02 00:00:00';
Warnings:
Note 1544 Event execution time is in the past. Event has been disabled
alter event event_35981 on schedule every 1 hour starts '1999-01-01 00:00:00'
ends '1999-01-02 00:00:00' on completion not preserve;
ERROR HY000: Event execution time is in the past and ON COMPLETION NOT PRESERVE is set. The event was not changed. Specify a time in the future
alter event event_35981 on schedule every 1 hour starts '1999-01-01 00:00:00'
ends '1999-01-02 00:00:00' on completion preserve;
Warnings:
Note 1544 Event execution time is in the past. Event has been disabled
drop event event_35981;
drop database events_test;
|