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
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
|
call mtr.add_suppression("InnoDB: Cannot add field .* in table");
# Test 1) Show the page size from Information Schema
SELECT variable_value FROM information_schema.global_status
WHERE LOWER(variable_name) = 'innodb_page_size';
variable_value
16384
# Test 4) The maximum row size is dependent upon the page size.
# Redundant: 8123, Compact: 8126, Dynamic: 8126.
# Each row format has its own amount of overhead that
# varies depending on number of fields and other overhead.
SET SESSION innodb_strict_mode = ON;
SET @save_level=@@GLOBAL.innodb_compression_level;
SET GLOBAL innodb_compression_level=1;
CREATE TABLE t1 (
c01 char(200), c02 char(200), c03 char(200), c04 char(200), c05 char(200),
c06 char(200), c07 char(200), c08 char(200), c09 char(200), c10 char(200),
c11 char(200), c12 char(200), c13 char(200), c14 char(200), c15 char(200),
c16 char(200), c17 char(200), c18 char(200), c19 char(200), c20 char(200),
c21 char(200), c22 char(200), c23 char(200), c24 char(200), c25 char(200),
c26 char(200), c27 char(200), c28 char(200), c29 char(200), c30 char(200),
c31 char(200), c32 char(200), c33 char(200), c34 char(200), c35 char(200),
c36 char(200), c37 char(200), c38 char(196)
) ROW_FORMAT=compressed;
DROP TABLE t1;
CREATE TABLE t1 (
c01 char(200), c02 char(200), c03 char(200), c04 char(200), c05 char(200),
c06 char(200), c07 char(200), c08 char(200), c09 char(200), c10 char(200),
c11 char(200), c12 char(200), c13 char(200), c14 char(200), c15 char(200),
c16 char(200), c17 char(200), c18 char(200), c19 char(200), c20 char(200),
c21 char(200), c22 char(200), c23 char(200), c24 char(200), c25 char(200),
c26 char(200), c27 char(200), c28 char(200), c29 char(200), c30 char(200),
c31 char(200), c32 char(200), c33 char(200), c34 char(200), c35 char(200),
c36 char(200), c37 char(200), c38 char(200), c39 char(200), c40 char(160)
) ROW_FORMAT=compressed;
ERROR 42000: Row size too large (> 8126). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
CREATE TABLE t1 (a varchar(255) character set utf8,
b varchar(255) character set utf8,
c varchar(255) character set utf8,
d varchar(255) character set utf8,
e varchar(4) character set utf8,
PRIMARY KEY (a,b,c,d,e))
ENGINE=innodb;
DROP TABLE t1;
CREATE TABLE t1 (a varchar(255) character set utf8,
b varchar(255) character set utf8,
c varchar(255) character set utf8,
d varchar(255) character set utf8,
e varchar(5) character set utf8,
PRIMARY KEY (a,b,c,d,e))
ENGINE=innodb;
ERROR 42000: Specified key was too long; max key length is 3072 bytes
CREATE TABLE t1 (a varchar(255) character set utf8,
b varchar(255) character set utf8,
c varchar(255) character set utf8,
d varchar(255) character set utf8,
e varchar(255) character set utf8,
f varchar(4) character set utf8,
PRIMARY KEY (a), KEY (b,c,d,e,f))
ENGINE=innodb;
DROP TABLE t1;
CREATE TABLE t1 (a varchar(255) character set utf8,
b varchar(255) character set utf8,
c varchar(255) character set utf8,
d varchar(255) character set utf8,
e varchar(255) character set utf8,
f varchar(5) character set utf8,
PRIMARY KEY (a), KEY (b,c,d,e,f))
ENGINE=innodb;
ERROR 42000: Specified key was too long; max key length is 3072 bytes
# Test 5) Make sure that KEY_BLOCK_SIZE=16, 8, 4, 2 & 1
# are all accepted.
SET SESSION innodb_strict_mode = ON;
CREATE TABLE t1 (i int) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=16;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=16
ALTER TABLE t1 KEY_BLOCK_SIZE=8;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=8
ALTER TABLE t1 KEY_BLOCK_SIZE=4;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=4
ALTER TABLE t1 KEY_BLOCK_SIZE=2;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=2
ALTER TABLE t1 KEY_BLOCK_SIZE=1;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=1
ALTER TABLE t1 KEY_BLOCK_SIZE=0;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED
DROP TABLE t1;
SET SESSION innodb_strict_mode = OFF;
CREATE TABLE t1 (i int) ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=16;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=16
ALTER TABLE t1 KEY_BLOCK_SIZE=8;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=8
ALTER TABLE t1 KEY_BLOCK_SIZE=4;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=4
ALTER TABLE t1 KEY_BLOCK_SIZE=2;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=2
ALTER TABLE t1 KEY_BLOCK_SIZE=1;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED key_block_size=1
ALTER TABLE t1 KEY_BLOCK_SIZE=0;
SHOW WARNINGS;
Level Code Message
SELECT table_name, row_format, create_options
FROM information_schema.tables WHERE table_name = 't1';
table_name row_format create_options
t1 Compressed row_format=COMPRESSED
DROP TABLE t1;
CREATE TABLE t2(d varchar(17) PRIMARY KEY) ENGINE=innodb DEFAULT CHARSET=utf8;
CREATE TABLE t3(a int PRIMARY KEY) ENGINE=innodb;
INSERT INTO t3 VALUES (22),(44),(33),(55),(66);
INSERT INTO t2 VALUES ('jejdkrun87'),('adfd72nh9k'),
('adfdpplkeock'),('adfdijnmnb78k'),('adfdijn0loKNHJik');
CREATE TABLE t1(a int, b blob, c text, d text NOT NULL)
ENGINE=innodb DEFAULT CHARSET=utf8;
INSERT INTO t1
SELECT a,LEFT(REPEAT(d,100*a),65535),REPEAT(d,20*a),d FROM t2,t3
ORDER BY a,d;
DROP TABLE t2, t3;
SELECT COUNT(*) FROM t1 WHERE a=44;
COUNT(*)
5
SELECT a,
LENGTH(b),b=LEFT(REPEAT(d,100*a),65535),LENGTH(c),c=REPEAT(d,20*a),d FROM t1
ORDER BY a,d;
a LENGTH(b) b=LEFT(REPEAT(d,100*a),65535) LENGTH(c) c=REPEAT(d,20*a) d
22 22000 1 4400 1 adfd72nh9k
22 35200 1 7040 1 adfdijn0loKNHJik
22 28600 1 5720 1 adfdijnmnb78k
22 26400 1 5280 1 adfdpplkeock
22 22000 1 4400 1 jejdkrun87
33 33000 1 6600 1 adfd72nh9k
33 52800 1 10560 1 adfdijn0loKNHJik
33 42900 1 8580 1 adfdijnmnb78k
33 39600 1 7920 1 adfdpplkeock
33 33000 1 6600 1 jejdkrun87
44 44000 1 8800 1 adfd72nh9k
44 65535 1 14080 1 adfdijn0loKNHJik
44 57200 1 11440 1 adfdijnmnb78k
44 52800 1 10560 1 adfdpplkeock
44 44000 1 8800 1 jejdkrun87
55 55000 1 11000 1 adfd72nh9k
55 65535 1 17600 1 adfdijn0loKNHJik
55 65535 1 14300 1 adfdijnmnb78k
55 65535 1 13200 1 adfdpplkeock
55 55000 1 11000 1 jejdkrun87
66 65535 1 13200 1 adfd72nh9k
66 65535 1 21120 1 adfdijn0loKNHJik
66 65535 1 17160 1 adfdijnmnb78k
66 65535 1 15840 1 adfdpplkeock
66 65535 1 13200 1 jejdkrun87
ALTER TABLE t1 ADD PRIMARY KEY (a), ADD KEY (b(20));
ERROR 23000: Duplicate entry '22' for key 'PRIMARY'
DELETE FROM t1 WHERE d='null';
ALTER TABLE t1 ADD PRIMARY KEY (a), ADD KEY (b(20));
ERROR 23000: Duplicate entry '22' for key 'PRIMARY'
DELETE FROM t1 WHERE a%2;
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
ALTER TABLE t1 ADD PRIMARY KEY (a,b(255),c(255)), ADD KEY (b(767));
SELECT COUNT(*) FROM t1 WHERE a=44;
COUNT(*)
5
SELECT a,
LENGTH(b), b=LEFT(REPEAT(d,100*a), 65535),LENGTH(c), c=REPEAT(d,20*a), d FROM t1
ORDER BY a,d;
a LENGTH(b) b=LEFT(REPEAT(d,100*a), 65535) LENGTH(c) c=REPEAT(d,20*a) d
22 22000 1 4400 1 adfd72nh9k
22 35200 1 7040 1 adfdijn0loKNHJik
22 28600 1 5720 1 adfdijnmnb78k
22 26400 1 5280 1 adfdpplkeock
22 22000 1 4400 1 jejdkrun87
44 44000 1 8800 1 adfd72nh9k
44 65535 1 14080 1 adfdijn0loKNHJik
44 57200 1 11440 1 adfdijnmnb78k
44 52800 1 10560 1 adfdpplkeock
44 44000 1 8800 1 jejdkrun87
66 65535 1 13200 1 adfd72nh9k
66 65535 1 21120 1 adfdijn0loKNHJik
66 65535 1 17160 1 adfdijnmnb78k
66 65535 1 15840 1 adfdpplkeock
66 65535 1 13200 1 jejdkrun87
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL,
`b` blob NOT NULL,
`c` text NOT NULL,
`d` text NOT NULL,
PRIMARY KEY (`a`,`b`(255),`c`(255)),
KEY `b` (`b`(767))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
DROP TABLE t1;
# Test 8) Test creating a table that could lead to undo log overflow.
CREATE TABLE t1(a blob,b blob,c blob,d blob,e blob,f blob,g blob,
h blob,i blob,j blob,k blob,l blob,m blob,n blob,
o blob,p blob,q blob,r blob,s blob,t blob,u blob)
ENGINE=InnoDB ROW_FORMAT=dynamic;
SET @a = repeat('a', 767);
SET @b = repeat('b', 767);
SET @c = repeat('c', 767);
SET @d = repeat('d', 767);
SET @e = repeat('e', 767);
INSERT INTO t1 VALUES (@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a,@a);
UPDATE t1 SET a=@b,b=@b,c=@b,d=@b,e=@b,f=@b,g=@b,h=@b,i=@b,j=@b,
k=@b,l=@b,m=@b,n=@b,o=@b,p=@b,q=@b,r=@b,s=@b,t=@b,u=@b;
CREATE INDEX t1a ON t1 (a(767));
CREATE INDEX t1b ON t1 (b(767));
CREATE INDEX t1c ON t1 (c(767));
CREATE INDEX t1d ON t1 (d(767));
CREATE INDEX t1e ON t1 (e(767));
UPDATE t1 SET a=@c,b=@c,c=@c,d=@c,e=@c,f=@c,g=@c,h=@c,i=@c,j=@c,
k=@c,l=@c,m=@c,n=@c,o=@c,p=@c,q=@c,r=@c,s=@c,t=@c,u=@c;
CREATE INDEX t1f ON t1 (f(767));
BEGIN;
UPDATE t1 SET a=@d,b=@d,c=@d,d=@d,e=@d,f=@d,g=@d,h=@d,i=@d,j=@d,
k=@d,l=@d,m=@d,n=@d,o=@d,p=@d,q=@d,r=@d,s=@d,t=@d,u=@d;
ROLLBACK;
BEGIN;
UPDATE t1 SET a=@d,b=@d,c=@d,d=@d,e=@d;
UPDATE t1 SET f=@d,g=@d,h=@d,i=@d,j=@d,k=@d,l=@d,m=@d,
n=@d,o=@d,p=@d,q=@d,r=@d,s=@d,t=@d,u=@d;
COMMIT;
CREATE INDEX t1g ON t1 (g(767));
UPDATE t1 SET g=@e;
CREATE INDEX t1h ON t1 (h(767));
UPDATE t1 SET h=@e;
CREATE INDEX t1i ON t1 (i(767));
UPDATE t1 SET i=@e;
CREATE INDEX t1j ON t1 (j(767));
UPDATE t1 SET j=@e;
CREATE INDEX t1k ON t1 (k(767));
UPDATE t1 SET k=@e;
CREATE INDEX t1l ON t1 (l(767));
UPDATE t1 SET l=@e;
CREATE INDEX t1m ON t1 (m(767));
UPDATE t1 SET m=@e;
CREATE INDEX t1n ON t1 (n(767));
UPDATE t1 SET n=@e;
CREATE INDEX t1o ON t1 (o(767));
UPDATE t1 SET o=@e;
CREATE INDEX t1p ON t1 (p(767));
UPDATE t1 SET p=@e;
CREATE INDEX t1q ON t1 (q(767));
UPDATE t1 SET q=@e;
CREATE INDEX t1r ON t1 (r(767));
UPDATE t1 SET r=@e;
CREATE INDEX t1s ON t1 (s(767));
UPDATE t1 SET s=@e;
CREATE INDEX t1t ON t1 (t(767));
BEGIN;
UPDATE t1 SET t=@e;
ROLLBACK;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` blob DEFAULT NULL,
`b` blob DEFAULT NULL,
`c` blob DEFAULT NULL,
`d` blob DEFAULT NULL,
`e` blob DEFAULT NULL,
`f` blob DEFAULT NULL,
`g` blob DEFAULT NULL,
`h` blob DEFAULT NULL,
`i` blob DEFAULT NULL,
`j` blob DEFAULT NULL,
`k` blob DEFAULT NULL,
`l` blob DEFAULT NULL,
`m` blob DEFAULT NULL,
`n` blob DEFAULT NULL,
`o` blob DEFAULT NULL,
`p` blob DEFAULT NULL,
`q` blob DEFAULT NULL,
`r` blob DEFAULT NULL,
`s` blob DEFAULT NULL,
`t` blob DEFAULT NULL,
`u` blob DEFAULT NULL,
KEY `t1a` (`a`(767)),
KEY `t1b` (`b`(767)),
KEY `t1c` (`c`(767)),
KEY `t1d` (`d`(767)),
KEY `t1e` (`e`(767)),
KEY `t1f` (`f`(767)),
KEY `t1g` (`g`(767)),
KEY `t1h` (`h`(767)),
KEY `t1i` (`i`(767)),
KEY `t1j` (`j`(767)),
KEY `t1k` (`k`(767)),
KEY `t1l` (`l`(767)),
KEY `t1m` (`m`(767)),
KEY `t1n` (`n`(767)),
KEY `t1o` (`o`(767)),
KEY `t1p` (`p`(767)),
KEY `t1q` (`q`(767)),
KEY `t1r` (`r`(767)),
KEY `t1s` (`s`(767)),
KEY `t1t` (`t`(767))
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC
DROP TABLE t1;
Test an assertion failure on purge.
CREATE TABLE t1_purge (
A int,
B blob, C blob, D blob, E blob,
F blob, G blob, H blob,
PRIMARY KEY (B(767), C(767), D(767), E(767), A),
INDEX (A)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t1_purge VALUES (1,
REPEAT('b', 766), REPEAT('c', 766), REPEAT('d', 766), REPEAT('e', 766),
REPEAT('f', 766), REPEAT('g', 766), REPEAT('h', 766));
CREATE TABLE t2_purge (
A int PRIMARY KEY,
B blob, C blob, D blob, E blob,
F blob, G blob, H blob, I blob,
J blob, K blob, L blob,
INDEX (B(767))) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t2_purge VALUES (1,
REPEAT('b', 766), REPEAT('c', 766), REPEAT('d', 766), REPEAT('e', 766),
REPEAT('f', 766), REPEAT('g', 766), REPEAT('h', 766), REPEAT('i', 766),
REPEAT('j', 766), REPEAT('k', 766), REPEAT('l', 766));
CREATE TABLE t3_purge (
A int,
B varchar(800), C varchar(800), D varchar(800), E varchar(800),
F varchar(800), G varchar(800), H varchar(800),
PRIMARY KEY (B(767), C(767), D(767), E(767), A),
INDEX (A)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t3_purge SELECT * FROM t1_purge;
CREATE TABLE t4_purge (
A int PRIMARY KEY,
B varchar(800), C varchar(800), D varchar(800), E varchar(800),
F varchar(800), G varchar(800), H varchar(800), I varchar(800),
J varchar(800), K varchar(800), L varchar(800),
INDEX (B(767))) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t4_purge SELECT * FROM t2_purge;
DELETE FROM t1_purge;
DELETE FROM t2_purge;
DELETE FROM t3_purge;
DELETE FROM t4_purge;
SET @r=REPEAT('a',500);
CREATE TABLE tlong(a int,
v1 varchar(500), v2 varchar(500), v3 varchar(500),
v4 varchar(500), v5 varchar(500), v6 varchar(500),
v7 varchar(500), v8 varchar(500), v9 varchar(500),
v10 varchar(500), v11 varchar(500), v12 varchar(500),
v13 varchar(500), v14 varchar(500), v15 varchar(500),
v16 varchar(500), v17 varchar(500), v18 varchar(500)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
CREATE INDEX idx1 ON tlong(a,v1);
INSERT INTO tlong VALUES(9,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r,@r);
UPDATE tlong SET a=1000;
DELETE FROM tlong;
CREATE TABLE tlong2(a blob,b blob,c blob,d blob,e blob,f blob,g blob,h blob,
i blob,j blob,k blob,l blob,m blob,n blob,o blob,p blob)
ENGINE=innodb ROW_FORMAT=dynamic;
SET @r = REPEAT('a', 767);
INSERT INTO tlong2 VALUES (@r,@r,@r,@r, @r,@r,@r,@r, @r,@r,@r,@r, @r,@r,@r,@r);
CREATE INDEX ndx_a ON tlong2 (a(500));
CREATE INDEX ndx_b ON tlong2 (b(500));
CREATE INDEX ndx_c ON tlong2 (c(500));
CREATE INDEX ndx_d ON tlong2 (d(500));
CREATE INDEX ndx_e ON tlong2 (e(500));
CREATE INDEX ndx_f ON tlong2 (f(500));
CREATE INDEX ndx_k ON tlong2 (k(500));
CREATE INDEX ndx_l ON tlong2 (l(500));
SET @r = REPEAT('b', 500);
UPDATE tlong2 set a=@r,b=@r,c=@r,d=@r;
UPDATE tlong2 set e=@r,f=@r,g=@r,h=@r;
UPDATE tlong2 set i=@r,j=@r,k=@r,l=@r;
UPDATE tlong2 set m=@r,n=@r,o=@r,p=@r;
ALTER TABLE tlong2 DROP INDEX ndx_a;
ALTER TABLE tlong2 DROP INDEX ndx_b;
CREATE INDEX ndx_g ON tlong2 (g(500));
CREATE INDEX ndx_h ON tlong2 (h(500));
CREATE INDEX ndx_i ON tlong2 (i(500));
CREATE INDEX ndx_j ON tlong2 (j(500));
CREATE INDEX ndx_m ON tlong2 (m(500));
CREATE INDEX ndx_n ON tlong2 (n(500));
CREATE INDEX ndx_o ON tlong2 (o(500));
CREATE INDEX ndx_p ON tlong2 (p(500));
SHOW CREATE TABLE tlong2;
Table Create Table
tlong2 CREATE TABLE `tlong2` (
`a` blob DEFAULT NULL,
`b` blob DEFAULT NULL,
`c` blob DEFAULT NULL,
`d` blob DEFAULT NULL,
`e` blob DEFAULT NULL,
`f` blob DEFAULT NULL,
`g` blob DEFAULT NULL,
`h` blob DEFAULT NULL,
`i` blob DEFAULT NULL,
`j` blob DEFAULT NULL,
`k` blob DEFAULT NULL,
`l` blob DEFAULT NULL,
`m` blob DEFAULT NULL,
`n` blob DEFAULT NULL,
`o` blob DEFAULT NULL,
`p` blob DEFAULT NULL,
KEY `ndx_c` (`c`(500)),
KEY `ndx_d` (`d`(500)),
KEY `ndx_e` (`e`(500)),
KEY `ndx_f` (`f`(500)),
KEY `ndx_k` (`k`(500)),
KEY `ndx_l` (`l`(500)),
KEY `ndx_g` (`g`(500)),
KEY `ndx_h` (`h`(500)),
KEY `ndx_i` (`i`(500)),
KEY `ndx_j` (`j`(500)),
KEY `ndx_m` (`m`(500)),
KEY `ndx_n` (`n`(500)),
KEY `ndx_o` (`o`(500)),
KEY `ndx_p` (`p`(500))
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci ROW_FORMAT=DYNAMIC
SET SESSION innodb_strict_mode = ON;
CREATE TABLE bug12547647(
a int NOT NULL, b blob NOT NULL, c text,
PRIMARY KEY (b(10), a), INDEX (c(767)), INDEX(b(767))
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO bug12547647 VALUES (5,REPEAT('khdfo5AlOq',1900),REPEAT('g',7751));
COMMIT;
BEGIN;
UPDATE bug12547647 SET c = REPEAT('b',16928);
SHOW WARNINGS;
Level Code Message
ROLLBACK;
DROP TABLE bug12547647;
SET SESSION innodb_strict_mode = on;
CREATE TABLE t1(
c text NOT NULL, d text NOT NULL,
PRIMARY KEY (c(767),d(767)))
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII;
ERROR 42000: Row size too large (> 8126). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
CREATE TABLE t1(
c text NOT NULL, d text NOT NULL,
PRIMARY KEY (c(767),d(767)))
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=2 CHARSET=ASCII;
ERROR 42000: Row size too large (> 8126). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
CREATE TABLE t1(
c text NOT NULL, d text NOT NULL,
PRIMARY KEY (c(767),d(767)))
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4 CHARSET=ASCII;
drop table t1;
CREATE TABLE t1(c text, PRIMARY KEY (c(440)))
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII;
ERROR 42000: Row size too large (> 8126). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
CREATE TABLE t1(c text, PRIMARY KEY (c(292)))
ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1 CHARSET=ASCII;
INSERT INTO t1 VALUES(REPEAT('A',512)),(REPEAT('B',512));
DROP TABLE t1;
InnoDB 0 transactions not purged
SET GLOBAL innodb_compression_level=@save_level;
DROP TABLE t1_purge, t2_purge, t3_purge, t4_purge;
DROP TABLE tlong;
DROP TABLE tlong2;
|