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
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
|
use test;
CREATE TABLE test.part_tbl(id MEDIUMINT NOT NULL AUTO_INCREMENT,
dt TIMESTAMP, user CHAR(255), uuidf LONGBLOB,
fkid MEDIUMINT, filler VARCHAR(255),
PRIMARY KEY(id)) ENGINE='innodb'
PARTITION BY RANGE(id)
SUBPARTITION BY hash(id) subpartitions 2
(PARTITION pa3 values less than (42),
PARTITION pa6 values less than (60),
PARTITION pa7 values less than (70),
PARTITION pa8 values less than (80),
PARTITION pa9 values less than (90),
PARTITION pa10 values less than (100),
PARTITION pa11 values less than MAXVALUE);
CREATE PROCEDURE test.proc_part()
BEGIN
DECLARE ins_count INT DEFAULT 1000;
DECLARE del_count INT;
DECLARE cur_user VARCHAR(255);
DECLARE local_uuid VARCHAR(255);
DECLARE local_time TIMESTAMP;
SET local_time= NOW();
SET cur_user= CURRENT_USER();
SET local_uuid= UUID();
WHILE ins_count > 0 DO
INSERT INTO test.part_tbl VALUES (NULL, NOW(), USER() , UUID(),
ins_count,'Going to test MBR for MySQL');
SET ins_count = ins_count - 1;
END WHILE;
SELECT MAX(id) FROM test.part_tbl INTO del_count;
WHILE del_count > 0 DO
DELETE FROM test.part_tbl WHERE id = del_count;
select count(*) as internal_count, del_count -- these two lines are for
FROM test.part_tbl; -- debug to show the problem
SET del_count = del_count - 2;
END WHILE;
END|
CALL test.proc_part();
internal_count del_count
999 1000
internal_count del_count
998 998
internal_count del_count
997 996
internal_count del_count
996 994
internal_count del_count
995 992
internal_count del_count
994 990
internal_count del_count
993 988
internal_count del_count
992 986
internal_count del_count
991 984
internal_count del_count
990 982
internal_count del_count
989 980
internal_count del_count
988 978
internal_count del_count
987 976
internal_count del_count
986 974
internal_count del_count
985 972
internal_count del_count
984 970
internal_count del_count
983 968
internal_count del_count
982 966
internal_count del_count
981 964
internal_count del_count
980 962
internal_count del_count
979 960
internal_count del_count
978 958
internal_count del_count
977 956
internal_count del_count
976 954
internal_count del_count
975 952
internal_count del_count
974 950
internal_count del_count
973 948
internal_count del_count
972 946
internal_count del_count
971 944
internal_count del_count
970 942
internal_count del_count
969 940
internal_count del_count
968 938
internal_count del_count
967 936
internal_count del_count
966 934
internal_count del_count
965 932
internal_count del_count
964 930
internal_count del_count
963 928
internal_count del_count
962 926
internal_count del_count
961 924
internal_count del_count
960 922
internal_count del_count
959 920
internal_count del_count
958 918
internal_count del_count
957 916
internal_count del_count
956 914
internal_count del_count
955 912
internal_count del_count
954 910
internal_count del_count
953 908
internal_count del_count
952 906
internal_count del_count
951 904
internal_count del_count
950 902
internal_count del_count
949 900
internal_count del_count
948 898
internal_count del_count
947 896
internal_count del_count
946 894
internal_count del_count
945 892
internal_count del_count
944 890
internal_count del_count
943 888
internal_count del_count
942 886
internal_count del_count
941 884
internal_count del_count
940 882
internal_count del_count
939 880
internal_count del_count
938 878
internal_count del_count
937 876
internal_count del_count
936 874
internal_count del_count
935 872
internal_count del_count
934 870
internal_count del_count
933 868
internal_count del_count
932 866
internal_count del_count
931 864
internal_count del_count
930 862
internal_count del_count
929 860
internal_count del_count
928 858
internal_count del_count
927 856
internal_count del_count
926 854
internal_count del_count
925 852
internal_count del_count
924 850
internal_count del_count
923 848
internal_count del_count
922 846
internal_count del_count
921 844
internal_count del_count
920 842
internal_count del_count
919 840
internal_count del_count
918 838
internal_count del_count
917 836
internal_count del_count
916 834
internal_count del_count
915 832
internal_count del_count
914 830
internal_count del_count
913 828
internal_count del_count
912 826
internal_count del_count
911 824
internal_count del_count
910 822
internal_count del_count
909 820
internal_count del_count
908 818
internal_count del_count
907 816
internal_count del_count
906 814
internal_count del_count
905 812
internal_count del_count
904 810
internal_count del_count
903 808
internal_count del_count
902 806
internal_count del_count
901 804
internal_count del_count
900 802
internal_count del_count
899 800
internal_count del_count
898 798
internal_count del_count
897 796
internal_count del_count
896 794
internal_count del_count
895 792
internal_count del_count
894 790
internal_count del_count
893 788
internal_count del_count
892 786
internal_count del_count
891 784
internal_count del_count
890 782
internal_count del_count
889 780
internal_count del_count
888 778
internal_count del_count
887 776
internal_count del_count
886 774
internal_count del_count
885 772
internal_count del_count
884 770
internal_count del_count
883 768
internal_count del_count
882 766
internal_count del_count
881 764
internal_count del_count
880 762
internal_count del_count
879 760
internal_count del_count
878 758
internal_count del_count
877 756
internal_count del_count
876 754
internal_count del_count
875 752
internal_count del_count
874 750
internal_count del_count
873 748
internal_count del_count
872 746
internal_count del_count
871 744
internal_count del_count
870 742
internal_count del_count
869 740
internal_count del_count
868 738
internal_count del_count
867 736
internal_count del_count
866 734
internal_count del_count
865 732
internal_count del_count
864 730
internal_count del_count
863 728
internal_count del_count
862 726
internal_count del_count
861 724
internal_count del_count
860 722
internal_count del_count
859 720
internal_count del_count
858 718
internal_count del_count
857 716
internal_count del_count
856 714
internal_count del_count
855 712
internal_count del_count
854 710
internal_count del_count
853 708
internal_count del_count
852 706
internal_count del_count
851 704
internal_count del_count
850 702
internal_count del_count
849 700
internal_count del_count
848 698
internal_count del_count
847 696
internal_count del_count
846 694
internal_count del_count
845 692
internal_count del_count
844 690
internal_count del_count
843 688
internal_count del_count
842 686
internal_count del_count
841 684
internal_count del_count
840 682
internal_count del_count
839 680
internal_count del_count
838 678
internal_count del_count
837 676
internal_count del_count
836 674
internal_count del_count
835 672
internal_count del_count
834 670
internal_count del_count
833 668
internal_count del_count
832 666
internal_count del_count
831 664
internal_count del_count
830 662
internal_count del_count
829 660
internal_count del_count
828 658
internal_count del_count
827 656
internal_count del_count
826 654
internal_count del_count
825 652
internal_count del_count
824 650
internal_count del_count
823 648
internal_count del_count
822 646
internal_count del_count
821 644
internal_count del_count
820 642
internal_count del_count
819 640
internal_count del_count
818 638
internal_count del_count
817 636
internal_count del_count
816 634
internal_count del_count
815 632
internal_count del_count
814 630
internal_count del_count
813 628
internal_count del_count
812 626
internal_count del_count
811 624
internal_count del_count
810 622
internal_count del_count
809 620
internal_count del_count
808 618
internal_count del_count
807 616
internal_count del_count
806 614
internal_count del_count
805 612
internal_count del_count
804 610
internal_count del_count
803 608
internal_count del_count
802 606
internal_count del_count
801 604
internal_count del_count
800 602
internal_count del_count
799 600
internal_count del_count
798 598
internal_count del_count
797 596
internal_count del_count
796 594
internal_count del_count
795 592
internal_count del_count
794 590
internal_count del_count
793 588
internal_count del_count
792 586
internal_count del_count
791 584
internal_count del_count
790 582
internal_count del_count
789 580
internal_count del_count
788 578
internal_count del_count
787 576
internal_count del_count
786 574
internal_count del_count
785 572
internal_count del_count
784 570
internal_count del_count
783 568
internal_count del_count
782 566
internal_count del_count
781 564
internal_count del_count
780 562
internal_count del_count
779 560
internal_count del_count
778 558
internal_count del_count
777 556
internal_count del_count
776 554
internal_count del_count
775 552
internal_count del_count
774 550
internal_count del_count
773 548
internal_count del_count
772 546
internal_count del_count
771 544
internal_count del_count
770 542
internal_count del_count
769 540
internal_count del_count
768 538
internal_count del_count
767 536
internal_count del_count
766 534
internal_count del_count
765 532
internal_count del_count
764 530
internal_count del_count
763 528
internal_count del_count
762 526
internal_count del_count
761 524
internal_count del_count
760 522
internal_count del_count
759 520
internal_count del_count
758 518
internal_count del_count
757 516
internal_count del_count
756 514
internal_count del_count
755 512
internal_count del_count
754 510
internal_count del_count
753 508
internal_count del_count
752 506
internal_count del_count
751 504
internal_count del_count
750 502
internal_count del_count
749 500
internal_count del_count
748 498
internal_count del_count
747 496
internal_count del_count
746 494
internal_count del_count
745 492
internal_count del_count
744 490
internal_count del_count
743 488
internal_count del_count
742 486
internal_count del_count
741 484
internal_count del_count
740 482
internal_count del_count
739 480
internal_count del_count
738 478
internal_count del_count
737 476
internal_count del_count
736 474
internal_count del_count
735 472
internal_count del_count
734 470
internal_count del_count
733 468
internal_count del_count
732 466
internal_count del_count
731 464
internal_count del_count
730 462
internal_count del_count
729 460
internal_count del_count
728 458
internal_count del_count
727 456
internal_count del_count
726 454
internal_count del_count
725 452
internal_count del_count
724 450
internal_count del_count
723 448
internal_count del_count
722 446
internal_count del_count
721 444
internal_count del_count
720 442
internal_count del_count
719 440
internal_count del_count
718 438
internal_count del_count
717 436
internal_count del_count
716 434
internal_count del_count
715 432
internal_count del_count
714 430
internal_count del_count
713 428
internal_count del_count
712 426
internal_count del_count
711 424
internal_count del_count
710 422
internal_count del_count
709 420
internal_count del_count
708 418
internal_count del_count
707 416
internal_count del_count
706 414
internal_count del_count
705 412
internal_count del_count
704 410
internal_count del_count
703 408
internal_count del_count
702 406
internal_count del_count
701 404
internal_count del_count
700 402
internal_count del_count
699 400
internal_count del_count
698 398
internal_count del_count
697 396
internal_count del_count
696 394
internal_count del_count
695 392
internal_count del_count
694 390
internal_count del_count
693 388
internal_count del_count
692 386
internal_count del_count
691 384
internal_count del_count
690 382
internal_count del_count
689 380
internal_count del_count
688 378
internal_count del_count
687 376
internal_count del_count
686 374
internal_count del_count
685 372
internal_count del_count
684 370
internal_count del_count
683 368
internal_count del_count
682 366
internal_count del_count
681 364
internal_count del_count
680 362
internal_count del_count
679 360
internal_count del_count
678 358
internal_count del_count
677 356
internal_count del_count
676 354
internal_count del_count
675 352
internal_count del_count
674 350
internal_count del_count
673 348
internal_count del_count
672 346
internal_count del_count
671 344
internal_count del_count
670 342
internal_count del_count
669 340
internal_count del_count
668 338
internal_count del_count
667 336
internal_count del_count
666 334
internal_count del_count
665 332
internal_count del_count
664 330
internal_count del_count
663 328
internal_count del_count
662 326
internal_count del_count
661 324
internal_count del_count
660 322
internal_count del_count
659 320
internal_count del_count
658 318
internal_count del_count
657 316
internal_count del_count
656 314
internal_count del_count
655 312
internal_count del_count
654 310
internal_count del_count
653 308
internal_count del_count
652 306
internal_count del_count
651 304
internal_count del_count
650 302
internal_count del_count
649 300
internal_count del_count
648 298
internal_count del_count
647 296
internal_count del_count
646 294
internal_count del_count
645 292
internal_count del_count
644 290
internal_count del_count
643 288
internal_count del_count
642 286
internal_count del_count
641 284
internal_count del_count
640 282
internal_count del_count
639 280
internal_count del_count
638 278
internal_count del_count
637 276
internal_count del_count
636 274
internal_count del_count
635 272
internal_count del_count
634 270
internal_count del_count
633 268
internal_count del_count
632 266
internal_count del_count
631 264
internal_count del_count
630 262
internal_count del_count
629 260
internal_count del_count
628 258
internal_count del_count
627 256
internal_count del_count
626 254
internal_count del_count
625 252
internal_count del_count
624 250
internal_count del_count
623 248
internal_count del_count
622 246
internal_count del_count
621 244
internal_count del_count
620 242
internal_count del_count
619 240
internal_count del_count
618 238
internal_count del_count
617 236
internal_count del_count
616 234
internal_count del_count
615 232
internal_count del_count
614 230
internal_count del_count
613 228
internal_count del_count
612 226
internal_count del_count
611 224
internal_count del_count
610 222
internal_count del_count
609 220
internal_count del_count
608 218
internal_count del_count
607 216
internal_count del_count
606 214
internal_count del_count
605 212
internal_count del_count
604 210
internal_count del_count
603 208
internal_count del_count
602 206
internal_count del_count
601 204
internal_count del_count
600 202
internal_count del_count
599 200
internal_count del_count
598 198
internal_count del_count
597 196
internal_count del_count
596 194
internal_count del_count
595 192
internal_count del_count
594 190
internal_count del_count
593 188
internal_count del_count
592 186
internal_count del_count
591 184
internal_count del_count
590 182
internal_count del_count
589 180
internal_count del_count
588 178
internal_count del_count
587 176
internal_count del_count
586 174
internal_count del_count
585 172
internal_count del_count
584 170
internal_count del_count
583 168
internal_count del_count
582 166
internal_count del_count
581 164
internal_count del_count
580 162
internal_count del_count
579 160
internal_count del_count
578 158
internal_count del_count
577 156
internal_count del_count
576 154
internal_count del_count
575 152
internal_count del_count
574 150
internal_count del_count
573 148
internal_count del_count
572 146
internal_count del_count
571 144
internal_count del_count
570 142
internal_count del_count
569 140
internal_count del_count
568 138
internal_count del_count
567 136
internal_count del_count
566 134
internal_count del_count
565 132
internal_count del_count
564 130
internal_count del_count
563 128
internal_count del_count
562 126
internal_count del_count
561 124
internal_count del_count
560 122
internal_count del_count
559 120
internal_count del_count
558 118
internal_count del_count
557 116
internal_count del_count
556 114
internal_count del_count
555 112
internal_count del_count
554 110
internal_count del_count
553 108
internal_count del_count
552 106
internal_count del_count
551 104
internal_count del_count
550 102
internal_count del_count
549 100
internal_count del_count
548 98
internal_count del_count
547 96
internal_count del_count
546 94
internal_count del_count
545 92
internal_count del_count
544 90
internal_count del_count
543 88
internal_count del_count
542 86
internal_count del_count
541 84
internal_count del_count
540 82
internal_count del_count
539 80
internal_count del_count
538 78
internal_count del_count
537 76
internal_count del_count
536 74
internal_count del_count
535 72
internal_count del_count
534 70
internal_count del_count
533 68
internal_count del_count
532 66
internal_count del_count
531 64
internal_count del_count
530 62
internal_count del_count
529 60
internal_count del_count
528 58
internal_count del_count
527 56
internal_count del_count
526 54
internal_count del_count
525 52
internal_count del_count
524 50
internal_count del_count
523 48
internal_count del_count
522 46
internal_count del_count
521 44
internal_count del_count
520 42
internal_count del_count
519 40
internal_count del_count
518 38
internal_count del_count
517 36
internal_count del_count
516 34
internal_count del_count
515 32
internal_count del_count
514 30
internal_count del_count
513 28
internal_count del_count
512 26
internal_count del_count
511 24
internal_count del_count
510 22
internal_count del_count
509 20
internal_count del_count
508 18
internal_count del_count
507 16
internal_count del_count
506 14
internal_count del_count
505 12
internal_count del_count
504 10
internal_count del_count
503 8
internal_count del_count
502 6
internal_count del_count
501 4
internal_count del_count
500 2
select count(*) as Part from test.part_tbl;
Part
500
DROP PROCEDURE test.proc_part;
DROP TABLE test.part_tbl;
|
