database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

MDEV-26294 Duplicate entries in unique index not detected when changing collation

Browse Source 
Problem:
=======
ALTER TABLE in InnoDB fails to detect duplicate entries
for the unique index when the character set or collation of
an indexed column is changed in such a way that the character
encoding is compatible with the old table definition.
In this case, any secondary indexes on the changed columns
would be rebuilt (DROP INDEX, ADD INDEX).

Solution:
========
During ALTER TABLE, InnoDB keeps track of columns whose collation
changed, and will fill in the correct metadata when sorting the
index records, or applying changes from concurrent DML.
This metadata will be allocated in the dict_index_t::heap of
the being-created secondary indexes.

The fix was developed by Thirunarayanan Balathandayuthapani
and simplified by me.
This commit is contained in:
Marko Mäkelä
2022-07-04 11:15:15 +03:00
parent f43145a0e3
commit f8240a2723
13 changed files with 466 additions and 265 deletions
Download Patch File Download Diff File Expand all files Collapse all files

182
mysql-test/suite/innodb/r/instant_alter_charset.result
View File

@@ -199,15 +199,6 @@ a varchar(150) charset utf8mb3 unique key
alter table key_part_bug
modify a varchar(150) charset utf8mb4,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table key_part_bug
modify a varchar(150) charset utf8mb4,
algorithm=nocopy;
ERROR 0A000: ALGORITHM=NOCOPY is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table key_part_bug
drop index a,
modify a varchar(150) charset utf8mb4,
algorithm=nocopy;
drop table key_part_bug;
create table latin1_swedish_special_case (
copy1 varchar(150) charset ascii collate ascii_general_ci,
@@ -318,23 +309,20 @@ check table t;
Table Op Msg_type Msg_text
test.t check status OK
alter table t modify aa char(10) collate utf8mb4_general_ci, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
check table t;
Table Op Msg_type Msg_text
test.t check status OK
alter table t modify bb char(70) collate utf8mb4_general_ci, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
check table t;
Table Op Msg_type Msg_text
test.t check status OK
alter table t modify cc char(100) collate utf8mb4_general_ci, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
check table t;
Table Op Msg_type Msg_text
test.t check status OK
alter table t modify d char(10) collate utf8mb4_spanish_ci, algorithm=instant;
alter table t modify dd char(10) collate utf8mb4_spanish_ci, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
select * from t;
a b c aa bb cc d dd
aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaa aaaaaaaaaa
@@ -390,10 +378,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_general_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_general_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -407,10 +391,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_bin,
modify b varchar(50) charset utf8mb4 collate utf8mb4_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_bin,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -424,10 +404,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_unicode_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -441,10 +417,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_icelandic_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_icelandic_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_icelandic_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -458,10 +430,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_latvian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_latvian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_latvian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -475,10 +443,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_romanian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_romanian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_romanian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -492,10 +456,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_slovenian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_slovenian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_slovenian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -509,10 +469,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_polish_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_polish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_polish_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -526,10 +482,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_estonian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_estonian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_estonian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -543,10 +495,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_spanish_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_spanish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_spanish_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -560,10 +508,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_swedish_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_swedish_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -577,10 +521,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_turkish_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_turkish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_turkish_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -594,10 +534,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_czech_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_czech_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_czech_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -611,10 +547,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_danish_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -628,10 +560,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_lithuanian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_lithuanian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_lithuanian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -645,10 +573,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_slovak_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_slovak_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_slovak_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -662,10 +586,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_spanish2_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_spanish2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_spanish2_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -679,10 +599,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_roman_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_roman_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_roman_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -696,10 +612,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -713,10 +625,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_esperanto_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_esperanto_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_esperanto_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -730,10 +638,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_hungarian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_hungarian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_hungarian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -747,10 +651,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_sinhala_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_sinhala_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_sinhala_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -764,10 +664,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -781,10 +677,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_croatian_mysql561_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_croatian_mysql561_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_croatian_mysql561_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -798,10 +690,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_520_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_unicode_520_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_520_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -815,10 +703,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -832,10 +716,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_croatian_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_croatian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_croatian_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -849,10 +729,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_myanmar_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_myanmar_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_myanmar_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -866,10 +742,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_thai_520_w2,
modify b varchar(50) charset utf8mb4 collate utf8mb4_thai_520_w2,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_thai_520_w2,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -883,10 +755,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_general_nopad_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_general_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_general_nopad_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -900,10 +768,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_nopad_bin,
modify b varchar(50) charset utf8mb4 collate utf8mb4_nopad_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_nopad_bin,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -917,10 +781,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_nopad_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_unicode_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_nopad_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -934,10 +794,6 @@ alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_520_nopad_ci,
modify b varchar(50) charset utf8mb4 collate utf8mb4_unicode_520_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_unicode_520_nopad_ci,
algorithm=instant;
check table tmp;
Table Op Msg_type Msg_text
test.tmp check status OK
@@ -974,7 +830,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
@@ -991,7 +847,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
@@ -1008,7 +864,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
@@ -1025,7 +881,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
@@ -1042,7 +898,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset ascii collate ascii_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset ascii collate ascii_bin,
algorithm=instant;
@@ -1059,7 +915,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb3 collate utf8mb3_lithuanian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb3 collate utf8mb3_lithuanian_ci,
algorithm=instant;
@@ -1076,7 +932,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
algorithm=instant;
@@ -1093,7 +949,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
algorithm=instant;
@@ -1110,7 +966,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf8mb3 collate utf8mb3_unicode_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb3 collate utf8mb3_unicode_ci,
algorithm=instant;
@@ -1127,7 +983,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset latin1 collate latin1_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset latin1 collate latin1_general_ci,
algorithm=instant;
@@ -1144,7 +1000,7 @@ algorithm=instant;
alter table tmp
modify b varchar(50) charset utf16 collate utf16_german2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf16 collate utf16_german2_ci,
algorithm=instant;
@@ -2031,11 +1887,8 @@ insert into t values
alter table t modify a char(10) collate latin1_general_cs, algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table t modify b char(10) collate latin1_general_cs, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table t modify b char(10) collate latin1_general_cs, algorithm=nocopy;
ERROR 0A000: ALGORITHM=NOCOPY is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table t modify b char(10) collate latin1_general_cs,
drop index b_key, algorithm=nocopy;
check table t;
Table Op Msg_type Msg_text
test.t check status OK
@@ -2055,11 +1908,8 @@ insert into t values
alter table t modify a varchar(10) collate latin1_general_cs, algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table t modify b varchar(10) collate latin1_general_cs, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: ADD INDEX. Try ALGORITHM=NOCOPY
alter table t modify b varchar(10) collate latin1_general_cs, algorithm=nocopy;
ERROR 0A000: ALGORITHM=NOCOPY is not supported. Reason: Collation change on an indexed column. Try ALGORITHM=COPY
alter table t modify b varchar(10) collate latin1_general_cs,
drop index b_key, algorithm=nocopy;
check table t;
Table Op Msg_type Msg_text
test.t check status OK
@@ -2201,7 +2051,7 @@ INSERT INTO t1 VALUES (1, 'a1'), (2, 'a1');
ALTER TABLE t1
CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_520_ci,
ADD UNIQUE INDEX test_key (a);
ERROR 23000: Duplicate entry 'a1' for key 'test_key'
ERROR 23000: Duplicate entry 'NULL' for key 'test_key'
ALTER TABLE t1 CONVERT TO CHARACTER SET UTF8MB4 COLLATE UTF8MB4_UNICODE_520_CI;
CHECK TABLE t1;
Table Op Msg_type Msg_text
@@ -2216,7 +2066,7 @@ INSERT INTO t1 VALUES (1, 'a1'), (2, 'a1');
ALTER TABLE t1
CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_520_ci,
ADD UNIQUE INDEX test_key (a);
ERROR 23000: Duplicate entry 'a1' for key 'test_key'
ERROR 23000: Duplicate entry 'NULL' for key 'test_key'
ALTER TABLE t1 CONVERT TO CHARACTER SET UTF8MB4 COLLATE UTF8MB4_UNICODE_520_CI;
CHECK TABLE t1;
Table Op Msg_type Msg_text