set names utf8;
create table no_rebuild (
a char(150) charset utf8mb3 collate utf8mb3_general_ci
) engine=innodb;
create table rebuild (
a varchar(150) charset ascii
) engine=innodb;
set @id = (select table_id from information_schema.innodb_sys_tables
where name = 'test/no_rebuild');
select name, prtype, len from information_schema.innodb_sys_columns
where table_id = @id;
name	prtype	len
a	2162942	450
select c.prtype, c.len from information_schema.innodb_sys_columns as c inner join information_schema.innodb_sys_tables t on c.table_id = t.table_id
where t.name = 'test/rebuild' and c.name = 'a';
prtype	len
720911	150
alter table no_rebuild
change a a char(150) charset utf8mb3 collate utf8mb3_spanish_ci,
algorithm=inplace;
alter table rebuild
change a a varchar(150) charset latin1 not null default 'asdf',
algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table rebuild
change a a varchar(150) charset latin1 not null default 'asdf',
algorithm=copy;
select name, prtype, len from information_schema.innodb_sys_columns
where table_id = @id;
name	prtype	len
a	13041918	450
select c.prtype, c.len from information_schema.innodb_sys_columns as c inner join information_schema.innodb_sys_tables t on c.table_id = t.table_id
where t.name = 'test/rebuild' and c.name = 'a';
prtype	len
524559	150
drop table no_rebuild, rebuild;
create table supported_types (
id int primary key auto_increment,
a varchar(150) charset ascii,
b text(150) charset ascii,
c text charset ascii,
d tinytext charset ascii,
e mediumtext charset ascii,
f longtext charset ascii
) engine=innodb;
alter table supported_types
convert to charset ascii collate ascii_bin,
algorithm=instant;
drop table supported_types;
create table various_cases (
a char(150) charset ascii,
b varchar(150) as (a) virtual,
c char(150) as (a) persistent
) engine=innodb;
alter table various_cases
change a a char(150) charset ascii collate ascii_bin,
algorithm=inplace;
alter table various_cases
change a a varchar(222),
algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table various_cases
change b b varchar(150) as (a) virtual,
algorithm=inplace;
alter table various_cases
change c c char(150) as (a) persistent,
algorithm=inplace;
ERROR 0A000: ALGORITHM=INPLACE is not supported for this operation. Try ALGORITHM=COPY
alter table various_cases
modify a char(150) charset utf8mb4,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table various_cases;
create table all_texts (
a tinytext charset ascii,
b text charset ascii,
c mediumtext charset ascii,
d longtext charset ascii,
footer int
) engine=innodb;
alter table all_texts
convert to charset ascii collate ascii_bin,
algorithm=instant;
drop table all_texts;
create table all_binaries (
a tinyblob,
b blob,
c mediumblob,
d longblob,
e varbinary(150),
f binary(150)
) engine=innodb;
alter table all_binaries modify a tinytext, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_binaries modify b text, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_binaries modify c mediumtext, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_binaries modify d longtext, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_binaries modify e varchar(150), algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_binaries modify f char(150), algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table all_binaries;
create table all_strings (
a tinytext,
b text,
c mediumtext,
d longtext,
e varchar(150),
f char(150)
) engine=innodb;
alter table all_strings modify a tinyblob, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify b blob, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify c mediumblob, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify d longblob, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify e varbinary(150), algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify f binary(150), algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify a tinytext charset binary, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify b text charset binary, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify c mediumtext charset binary, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify d longtext charset binary, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify e varchar(150) charset binary, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table all_strings modify f char(150) charset binary, algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table all_strings;
create table key_part_change (
a char(150) charset ascii,
b char(150) charset ascii,
c char(150) charset ascii,
unique key ab (a,b)
) engine=innodb;
alter table key_part_change
modify a char(150) charset utf8mb4,
drop index ab,
add unique key ab(a,c),
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table key_part_change;
create table key_part_change_and_rename (
a char(100) charset ascii,
b char(100) charset ascii,
unique key ab (a,b)
) engine=innodb;
alter table key_part_change_and_rename
change a b char(100) charset utf8mb4,
change b a char(100) charset utf8mb4,
drop index ab,
add unique key ab(a,b),
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table key_part_change_and_rename;
create table enum_and_set (
a enum('one', 'two') charset utf8mb3,
b set('three', 'four') charset utf8mb3
) engine=innodb;
alter table enum_and_set
modify a enum('one', 'two') charset utf8mb4,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table enum_and_set
modify b enum('three', 'four') charset utf8mb4,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table enum_and_set;
create table compressed (
a varchar(255) compressed charset utf8mb3
) engine=innodb;
insert into compressed values ('AAA'), ('bbb'), ('CCC');
alter table compressed
modify a varchar(255) compressed charset utf8mb4,
algorithm=instant;
select * from compressed;
a
AAA
bbb
CCC
check table compresed;
Table	Op	Msg_type	Msg_text
test.compresed	check	Error	Table 'test.compresed' doesn't exist
test.compresed	check	status	Operation failed
drop table compressed;
create table key_part_bug (
id int primary key auto_increment,
a varchar(150) charset utf8mb3 unique key
) engine=innodb;
alter table key_part_bug
modify a varchar(150) charset utf8mb4,
algorithm=instant;
drop table key_part_bug;
create table latin1_swedish_special_case (
copy1 varchar(150) charset ascii collate ascii_general_ci,
copy2 char(150) charset ascii collate ascii_general_ci,
instant1 varchar(150) charset ascii collate ascii_general_ci,
instant2 char(150) charset ascii collate ascii_general_ci
) engine=innodb;
select c.name, c.prtype, c.mtype, c.len from information_schema.innodb_sys_columns as c inner join information_schema.innodb_sys_tables t on c.table_id = t.table_id
where t.name = 'test/latin1_swedish_special_case';
name	prtype	mtype	len
copy1	720911	12	150
copy2	721150	13	150
instant1	720911	12	150
instant2	721150	13	150
alter table latin1_swedish_special_case
modify copy1 varchar(150) charset latin1 collate latin1_swedish_ci,
modify copy2 char(150) charset latin1 collate latin1_swedish_ci,
algorithm=copy;
alter table latin1_swedish_special_case
modify instant1 varchar(150) charset latin1 collate latin1_swedish_ci,
modify instant2 char(150) charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table latin1_swedish_special_case
modify instant1 varchar(150) charset latin1 collate latin1_swedish_ci,
modify instant2 char(150) charset latin1 collate latin1_swedish_ci,
algorithm=copy;
select c.name, c.prtype, c.mtype, c.len from information_schema.innodb_sys_columns as c inner join information_schema.innodb_sys_tables t on c.table_id = t.table_id
where t.name = 'test/latin1_swedish_special_case';
name	prtype	mtype	len
copy1	524303	1	150
copy2	524542	2	150
instant1	524303	1	150
instant2	524542	2	150
alter table latin1_swedish_special_case
modify copy1 varchar(150) charset latin1 collate latin1_general_ci,
modify copy2 char(150) charset latin1 collate latin1_general_ci,
algorithm=copy;
alter table latin1_swedish_special_case
modify instant1 varchar(150) charset latin1 collate latin1_general_ci,
modify instant2 char(150) charset latin1 collate latin1_general_ci,
algorithm=instant;
select c.name, c.prtype, c.mtype, c.len from information_schema.innodb_sys_columns as c inner join information_schema.innodb_sys_tables t on c.table_id = t.table_id
where t.name = 'test/latin1_swedish_special_case';
name	prtype	mtype	len
copy1	3145743	12	150
copy2	3145982	13	150
instant1	3145743	12	150
instant2	3145982	13	150
drop table latin1_swedish_special_case;
create table regression (a varchar(100) charset utf8mb3 primary key, b int) engine=innodb;
alter table regression convert to character set utf8mb4;
drop table regression;
create table boundary_255 (
a varchar(50) charset ascii,
b varchar(200) charset ascii,
c varchar(300) charset ascii
) engine=innodb;
alter table boundary_255
modify a varchar(50) charset utf8mb3,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table boundary_255
modify a varchar(50) charset utf8mb3,
algorithm=copy;
alter table boundary_255
modify b varchar(200) charset utf8mb3,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table boundary_255
modify c varchar(300) charset utf8mb3,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table boundary_255;
create table boundary_255 (
a varchar(70) charset utf8mb3
) engine=innodb;
alter table boundary_255
modify a varchar(70) charset utf8mb4,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table boundary_255;
create table t (
a char(10) collate utf8mb3_general_ci,
b char(70) collate utf8mb3_general_ci,
c char(100) collate utf8mb3_general_ci,
aa char(10) collate utf8mb3_general_ci unique,
bb char(70) collate utf8mb3_general_ci unique,
cc char(100) collate utf8mb3_general_ci unique,
d char(10) collate utf8mb3_general_ci,
dd char(10) collate utf8mb3_general_ci unique
) engine=innodb;
insert into t values
(repeat('a', 10), repeat('a', 70), repeat('a', 100),
repeat('a', 10), repeat('a', 70), repeat('a', 100),
repeat('a', 10), repeat('a', 10)
);
alter table t modify a char(10) collate utf8mb4_general_ci, algorithm=instant;
check table t;
Table	Op	Msg_type	Msg_text
test.t	check	status	OK
alter table t modify b char(70) collate utf8mb4_general_ci, algorithm=instant;
check table t;
Table	Op	Msg_type	Msg_text
test.t	check	status	OK
alter table t modify c char(100) collate utf8mb4_general_ci, algorithm=instant;
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;
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;
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;
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: ADD INDEX. Try ALGORITHM=NOCOPY
select * from t;
a	b	c	aa	bb	cc	d	dd
aaaaaaaaaa	aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	aaaaaaaaaa	aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa	aaaaaaaaaa	aaaaaaaaaa
drop table t;
create table fully_compatible (
id int auto_increment unique key,
from_charset char(255),
from_collate char(255),
to_charset char(255),
to_collate char(255)
);
insert into fully_compatible (from_charset, from_collate, to_charset, to_collate) values
('utf8mb3', 'utf8mb3_general_ci',           'utf8mb4', 'utf8mb4_general_ci'),
('utf8mb3', 'utf8mb3_bin',                  'utf8mb4', 'utf8mb4_bin'),
('utf8mb3', 'utf8mb3_unicode_ci',           'utf8mb4', 'utf8mb4_unicode_ci'),
('utf8mb3', 'utf8mb3_icelandic_ci',         'utf8mb4', 'utf8mb4_icelandic_ci'),
('utf8mb3', 'utf8mb3_latvian_ci',           'utf8mb4', 'utf8mb4_latvian_ci'),
('utf8mb3', 'utf8mb3_romanian_ci',          'utf8mb4', 'utf8mb4_romanian_ci'),
('utf8mb3', 'utf8mb3_slovenian_ci',         'utf8mb4', 'utf8mb4_slovenian_ci'),
('utf8mb3', 'utf8mb3_polish_ci',            'utf8mb4', 'utf8mb4_polish_ci'),
('utf8mb3', 'utf8mb3_estonian_ci',          'utf8mb4', 'utf8mb4_estonian_ci'),
('utf8mb3', 'utf8mb3_spanish_ci',           'utf8mb4', 'utf8mb4_spanish_ci'),
('utf8mb3', 'utf8mb3_swedish_ci',           'utf8mb4', 'utf8mb4_swedish_ci'),
('utf8mb3', 'utf8mb3_turkish_ci',           'utf8mb4', 'utf8mb4_turkish_ci'),
('utf8mb3', 'utf8mb3_czech_ci',             'utf8mb4', 'utf8mb4_czech_ci'),
('utf8mb3', 'utf8mb3_danish_ci',            'utf8mb4', 'utf8mb4_danish_ci'),
('utf8mb3', 'utf8mb3_lithuanian_ci',        'utf8mb4', 'utf8mb4_lithuanian_ci'),
('utf8mb3', 'utf8mb3_slovak_ci',            'utf8mb4', 'utf8mb4_slovak_ci'),
('utf8mb3', 'utf8mb3_spanish2_ci',          'utf8mb4', 'utf8mb4_spanish2_ci'),
('utf8mb3', 'utf8mb3_roman_ci',             'utf8mb4', 'utf8mb4_roman_ci'),
('utf8mb3', 'utf8mb3_persian_ci',           'utf8mb4', 'utf8mb4_persian_ci'),
('utf8mb3', 'utf8mb3_esperanto_ci',         'utf8mb4', 'utf8mb4_esperanto_ci'),
('utf8mb3', 'utf8mb3_hungarian_ci',         'utf8mb4', 'utf8mb4_hungarian_ci'),
('utf8mb3', 'utf8mb3_sinhala_ci',           'utf8mb4', 'utf8mb4_sinhala_ci'),
('utf8mb3', 'utf8mb3_german2_ci',           'utf8mb4', 'utf8mb4_german2_ci'),
('utf8mb3', 'utf8mb3_croatian_mysql561_ci', 'utf8mb4', 'utf8mb4_croatian_mysql561_ci'),
('utf8mb3', 'utf8mb3_unicode_520_ci',       'utf8mb4', 'utf8mb4_unicode_520_ci'),
('utf8mb3', 'utf8mb3_vietnamese_ci',        'utf8mb4', 'utf8mb4_vietnamese_ci'),
('utf8mb3', 'utf8mb3_croatian_ci',          'utf8mb4', 'utf8mb4_croatian_ci'),
('utf8mb3', 'utf8mb3_myanmar_ci',           'utf8mb4', 'utf8mb4_myanmar_ci'),
('utf8mb3', 'utf8mb3_thai_520_w2',          'utf8mb4', 'utf8mb4_thai_520_w2'),
('utf8mb3', 'utf8mb3_general_nopad_ci',     'utf8mb4', 'utf8mb4_general_nopad_ci'),
('utf8mb3', 'utf8mb3_nopad_bin',            'utf8mb4', 'utf8mb4_nopad_bin'),
('utf8mb3', 'utf8mb3_unicode_nopad_ci',     'utf8mb4', 'utf8mb4_unicode_nopad_ci'),
('utf8mb3', 'utf8mb3_unicode_520_nopad_ci', 'utf8mb4', 'utf8mb4_unicode_520_nopad_ci')
;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_general_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_general_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_bin,
b varchar(50) charset utf8mb3 collate utf8mb3_bin primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_bin,
modify b varchar(50) charset utf8mb4 collate utf8mb4_bin,
algorithm=instant;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_unicode_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_unicode_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_icelandic_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_icelandic_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_latvian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_latvian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_romanian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_romanian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_slovenian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_slovenian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_polish_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_polish_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_estonian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_estonian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_spanish_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_spanish_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_swedish_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_swedish_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_turkish_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_turkish_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_czech_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_czech_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_danish_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_danish_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_lithuanian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_lithuanian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_slovak_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_slovak_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_spanish2_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_spanish2_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_roman_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_roman_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_persian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_persian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_esperanto_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_esperanto_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_hungarian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_hungarian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_sinhala_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_sinhala_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_german2_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_german2_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_croatian_mysql561_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_croatian_mysql561_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_unicode_520_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_unicode_520_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_vietnamese_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_vietnamese_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_croatian_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_croatian_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_myanmar_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_myanmar_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_thai_520_w2,
b varchar(50) charset utf8mb3 collate utf8mb3_thai_520_w2 primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_general_nopad_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_general_nopad_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_nopad_bin,
b varchar(50) charset utf8mb3 collate utf8mb3_nopad_bin primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_unicode_nopad_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_unicode_nopad_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_unicode_520_nopad_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_unicode_520_nopad_ci primary key
) engine=innodb;
insert into tmp values ('AAA', 'AAA'), ('bbb', 'bbb');
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;
check table tmp;
Table	Op	Msg_type	Msg_text
test.tmp	check	status	OK
drop table tmp;
drop table fully_compatible;
create table compatible_without_index (
id int auto_increment unique key,
from_charset char(255),
from_collate char(255),
to_charset char(255),
to_collate char(255)
);
insert into compatible_without_index (from_charset, from_collate, to_charset, to_collate) values
('utf8mb3', 'utf8mb3_general_ci',       'utf8mb4', 'utf8mb4_vietnamese_ci'),
('utf8mb3', 'utf8mb3_bin',              'utf8mb4', 'utf8mb4_vietnamese_ci'),
('utf8mb3', 'utf8mb3_general_nopad_ci', 'utf8mb4', 'utf8mb4_vietnamese_ci'),
('utf8mb3', 'utf8mb3_nopad_bin',        'utf8mb4', 'utf8mb4_vietnamese_ci'),
('ascii',   'ascii_general_ci',      'ascii',   'ascii_bin'),
('utf8mb3', 'utf8mb3_roman_ci',      'utf8mb3', 'utf8mb3_lithuanian_ci'),
('utf8mb4', 'utf8mb4_thai_520_w2',   'utf8mb4', 'utf8mb4_persian_ci'),
('utf8mb3', 'utf8mb3_myanmar_ci',    'utf8mb4', 'utf8mb4_german2_ci'),
('utf8mb3', 'utf8mb3_general_ci',    'utf8mb3', 'utf8mb3_unicode_ci'),
('latin1',  'latin1_general_cs',     'latin1',  'latin1_general_ci'),
('utf16',   'utf16_general_ci',      'utf16',   'utf16_german2_ci')
;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_general_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_general_ci unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_general_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_bin,
b varchar(50) charset utf8mb3 collate utf8mb3_bin unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_bin primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_general_nopad_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_general_nopad_ci unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_general_nopad_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_nopad_bin,
b varchar(50) charset utf8mb3 collate utf8mb3_nopad_bin unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_nopad_bin primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_vietnamese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset ascii collate ascii_general_ci,
b varchar(50) charset ascii collate ascii_general_ci unique key,
c varchar(50) charset ascii collate ascii_general_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset ascii collate ascii_bin,
algorithm=instant;
alter table tmp
modify b varchar(50) charset ascii collate ascii_bin,
algorithm=instant;
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;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_roman_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_roman_ci unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_roman_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb3 collate utf8mb3_lithuanian_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb3 collate utf8mb3_lithuanian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb4 collate utf8mb4_thai_520_w2,
b varchar(50) charset utf8mb4 collate utf8mb4_thai_520_w2 unique key,
c varchar(50) charset utf8mb4 collate utf8mb4_thai_520_w2 primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_persian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_myanmar_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_myanmar_ci unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_myanmar_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb4 collate utf8mb4_german2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf8mb3 collate utf8mb3_general_ci,
b varchar(50) charset utf8mb3 collate utf8mb3_general_ci unique key,
c varchar(50) charset utf8mb3 collate utf8mb3_general_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf8mb3 collate utf8mb3_unicode_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf8mb3 collate utf8mb3_unicode_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset latin1 collate latin1_general_cs,
b varchar(50) charset latin1 collate latin1_general_cs unique key,
c varchar(50) charset latin1 collate latin1_general_cs primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset latin1 collate latin1_general_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset latin1 collate latin1_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(50) charset utf16 collate utf16_general_ci,
b varchar(50) charset utf16 collate utf16_general_ci unique key,
c varchar(50) charset utf16 collate utf16_general_ci primary key
) engine=innodb;
alter table tmp
change a a varchar(50) charset utf16 collate utf16_german2_ci,
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table tmp
modify c varchar(50) charset utf16 collate utf16_german2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
drop table compatible_without_index;
create table fully_incompatible (
id int auto_increment unique key,
from_charset char(255),
from_collate char(255),
to_charset char(255),
to_collate char(255)
);
insert into fully_incompatible (from_charset, from_collate, to_charset, to_collate) values
('ascii', 'ascii_general_ci',       'utf8mb3', 'utf8mb3_general_ci'),
('ascii', 'ascii_general_ci',       'utf8mb4', 'utf8mb4_general_ci'),
('ascii', 'ascii_general_ci',       'latin1', 'latin1_general_ci'),
('ascii', 'ascii_bin',              'latin1', 'latin1_bin'),
('ascii', 'ascii_nopad_bin',        'latin1', 'latin1_nopad_bin'),
('ascii', 'ascii_general_ci',       'latin2', 'latin2_general_ci'),
('ascii', 'ascii_general_ci',       'latin7', 'latin7_general_ci'),
('ascii', 'ascii_bin',              'koi8u',  'koi8u_bin'),
('ascii', 'ascii_bin',              'ujis',   'ujis_bin'),
('ascii', 'ascii_bin',              'big5',   'big5_bin'),
('ascii', 'ascii_bin',              'gbk',    'gbk_bin'),
('ascii', 'ascii_general_ci',       'utf8mb3', 'utf8mb3_swedish_ci'),
('ascii', 'ascii_bin',              'latin1', 'latin1_swedish_ci'),
('ascii', 'ascii_general_nopad_ci', 'latin1', 'latin1_swedish_ci'),
('ascii', 'ascii_nopad_bin',        'latin1', 'latin1_swedish_ci'),
('ascii', 'ascii_general_ci',       'koi8u', 'koi8u_bin'),
('ascii', 'ascii_general_nopad_ci', 'koi8u', 'koi8u_bin'),
('ascii', 'ascii_nopad_bin',        'koi8u', 'koi8u_bin'),
('ascii', 'ascii_general_ci',       'latin1', 'latin1_swedish_ci'),
('ascii', 'ascii_bin',              'utf8mb3', 'utf8mb3_swedish_ci'),
('ascii', 'ascii_general_nopad_ci', 'utf8mb3', 'utf8mb3_swedish_ci'),
('ascii', 'ascii_nopad_bin',        'utf8mb3', 'utf8mb3_swedish_ci'),
('ascii', 'ascii_general_ci',       'utf8mb4', 'utf8mb4_danish_ci'),
('ascii', 'ascii_bin',              'utf8mb4', 'utf8mb4_danish_ci'),
('ascii', 'ascii_general_nopad_ci', 'utf8mb4', 'utf8mb4_danish_ci'),
('ascii', 'ascii_nopad_bin',        'utf8mb4', 'utf8mb4_danish_ci'),
('ascii', 'ascii_general_ci',     'gbk',  'gbk_chinese_ci'),
('ascii', 'ascii_general_ci',     'gbk',  'gbk_chinese_nopad_ci'),
('ascii', 'ascii_general_ci',      'ujis',    'ujis_japanese_ci'),
('ascii', 'ascii_general_ci',      'big5',    'big5_chinese_ci'),
('ascii', 'ascii_general_ci',      'latin2',  'latin2_croatian_ci'),
('ascii', 'ascii_general_ci',      'latin7',  'latin7_estonian_cs'),
('ucs2',  'ucs2_general_ci',       'utf16',   'utf16_general_ci'),
('ucs2',  'ucs2_unicode_ci',       'utf16',   'utf16_unicode_ci'),
('ucs2',  'ucs2_icelandic_ci',     'utf16',   'utf16_icelandic_ci'),
('ucs2',  'ucs2_latvian_ci',       'utf16',   'utf16_latvian_ci'),
('ucs2',  'ucs2_romanian_ci',      'utf16',   'utf16_romanian_ci'),
('ucs2',  'ucs2_slovenian_ci',     'utf16',   'utf16_slovenian_ci'),
('ucs2',  'ucs2_polish_ci',        'utf16',   'utf16_polish_ci'),
('ucs2',  'ucs2_estonian_ci',      'utf16',   'utf16_estonian_ci'),
('ucs2',  'ucs2_spanish_ci',       'utf16',   'utf16_spanish_ci'),
('ucs2',  'ucs2_general_ci',       'utf16',   'utf16_general_ci'),
('ucs2',  'ucs2_myanmar_ci',          'utf16', 'utf16_thai_520_w2'),
('ucs2',  'ucs2_general_ci',          'utf16', 'utf16_unicode_nopad_ci'),
('ucs2',  'ucs2_general_mysql500_ci', 'utf16', 'utf16_spanish2_ci'),
('utf8mb4', 'utf8mb4_general_ci', 'utf8mb3', 'utf8mb3_general_ci'),
('utf8mb4', 'utf8mb4_general_ci', 'ascii', 'ascii_general_ci'),
('utf8mb3', 'utf8mb3_general_ci', 'ascii', 'ascii_general_ci'),
('utf8mb3', 'utf8mb3_general_ci', 'latin1', 'latin1_general_ci'),
('utf16', 'utf16_general_ci', 'utf32', 'utf32_general_ci'),
('latin1', 'latin1_general_ci',   'ascii', 'ascii_general_ci'),
('ascii', 'ascii_general_ci',     'swe7', 'swe7_swedish_ci'),
('eucjpms', 'eucjpms_japanese_nopad_ci', 'geostd8', 'geostd8_general_ci'),
('latin1', 'latin1_general_ci',   'utf16', 'utf16_general_ci')
;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb3 collate utf8mb3_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb3 collate utf8mb3_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb4 collate utf8mb4_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb4 collate utf8mb4_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_nopad_bin,
b text(150) charset ascii collate ascii_nopad_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_nopad_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_nopad_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin2 collate latin2_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin2 collate latin2_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin7 collate latin7_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin7 collate latin7_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset ujis collate ujis_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset ujis collate ujis_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset big5 collate big5_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset big5 collate big5_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset gbk collate gbk_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset gbk collate gbk_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_nopad_ci,
b text(150) charset ascii collate ascii_general_nopad_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_nopad_bin,
b text(150) charset ascii collate ascii_nopad_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_nopad_ci,
b text(150) charset ascii collate ascii_general_nopad_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_nopad_bin,
b text(150) charset ascii collate ascii_nopad_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset koi8u collate koi8u_bin,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_nopad_ci,
b text(150) charset ascii collate ascii_general_nopad_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_nopad_bin,
b text(150) charset ascii collate ascii_nopad_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb3 collate utf8mb3_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_bin,
b text(150) charset ascii collate ascii_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_nopad_ci,
b text(150) charset ascii collate ascii_general_nopad_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_nopad_bin,
b text(150) charset ascii collate ascii_nopad_bin,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb4 collate utf8mb4_danish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset gbk collate gbk_chinese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset gbk collate gbk_chinese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset gbk collate gbk_chinese_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset gbk collate gbk_chinese_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset ujis collate ujis_japanese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset ujis collate ujis_japanese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset big5 collate big5_chinese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset big5 collate big5_chinese_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin2 collate latin2_croatian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin2 collate latin2_croatian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin7 collate latin7_estonian_cs,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin7 collate latin7_estonian_cs,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_general_ci,
b text(150) charset ucs2 collate ucs2_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_unicode_ci,
b text(150) charset ucs2 collate ucs2_unicode_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_unicode_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_unicode_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_icelandic_ci,
b text(150) charset ucs2 collate ucs2_icelandic_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_icelandic_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_icelandic_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_latvian_ci,
b text(150) charset ucs2 collate ucs2_latvian_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_latvian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_latvian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_romanian_ci,
b text(150) charset ucs2 collate ucs2_romanian_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_romanian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_romanian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_slovenian_ci,
b text(150) charset ucs2 collate ucs2_slovenian_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_slovenian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_slovenian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_polish_ci,
b text(150) charset ucs2 collate ucs2_polish_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_polish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_polish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_estonian_ci,
b text(150) charset ucs2 collate ucs2_estonian_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_estonian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_estonian_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_spanish_ci,
b text(150) charset ucs2 collate ucs2_spanish_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_spanish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_spanish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_general_ci,
b text(150) charset ucs2 collate ucs2_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_myanmar_ci,
b text(150) charset ucs2 collate ucs2_myanmar_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_thai_520_w2,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_thai_520_w2,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_general_ci,
b text(150) charset ucs2 collate ucs2_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_unicode_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_unicode_nopad_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ucs2 collate ucs2_general_mysql500_ci,
b text(150) charset ucs2 collate ucs2_general_mysql500_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_spanish2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_spanish2_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset utf8mb4 collate utf8mb4_general_ci,
b text(150) charset utf8mb4 collate utf8mb4_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf8mb3 collate utf8mb3_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf8mb3 collate utf8mb3_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset utf8mb4 collate utf8mb4_general_ci,
b text(150) charset utf8mb4 collate utf8mb4_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset ascii collate ascii_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset ascii collate ascii_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset utf8mb3 collate utf8mb3_general_ci,
b text(150) charset utf8mb3 collate utf8mb3_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset ascii collate ascii_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset ascii collate ascii_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset utf8mb3 collate utf8mb3_general_ci,
b text(150) charset utf8mb3 collate utf8mb3_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset latin1 collate latin1_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset latin1 collate latin1_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset utf16 collate utf16_general_ci,
b text(150) charset utf16 collate utf16_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf32 collate utf32_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf32 collate utf32_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset latin1 collate latin1_general_ci,
b text(150) charset latin1 collate latin1_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset ascii collate ascii_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset ascii collate ascii_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset ascii collate ascii_general_ci,
b text(150) charset ascii collate ascii_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset swe7 collate swe7_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset swe7 collate swe7_swedish_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset eucjpms collate eucjpms_japanese_nopad_ci,
b text(150) charset eucjpms collate eucjpms_japanese_nopad_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset geostd8 collate geostd8_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset geostd8 collate geostd8_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
create table tmp (
a varchar(150) charset latin1 collate latin1_general_ci,
b text(150) charset latin1 collate latin1_general_ci,
unique key b_idx (b(150))
) engine=innodb;
alter table tmp
change a a varchar(150) charset utf16 collate utf16_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
alter table tmp
modify b text charset utf16 collate utf16_general_ci,
algorithm=instant;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
drop table tmp;
drop table fully_incompatible;
#
# MDEV-19284 INSTANT ALTER with ucs2-to-utf16 conversion produces bad data
#
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET ucs2, PRIMARY KEY(a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('a'),(0xD800);
ALTER TABLE t1 ALGORITHM=COPY, MODIFY a VARCHAR(10) CHARACTER SET utf16;
ERROR 22007: Incorrect string value: '\xD8\x00' for column `test`.`t1`.`a` at row 2
ALTER TABLE t1 ALGORITHM=INSTANT, MODIFY a VARCHAR(10) CHARACTER SET utf16;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
ALTER IGNORE TABLE t1 MODIFY a VARCHAR(10) CHARACTER SET utf16;
affected rows: 2
info: Records: 2  Duplicates: 0  Warnings: 1
Warnings:
Warning	1366	Incorrect string value: '\xD8\x00' for column `test`.`t1`.`a` at row 2
SELECT HEX(a) FROM t1;
HEX(a)
003F
0061
DROP TABLE t1;
#
# MDEV-19285 INSTANT ALTER from ascii_general_ci to latin1_general_ci produces corrupt data
#
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET ascii COLLATE ascii_general_ci, PRIMARY KEY(a)) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('a'),(0xC0),('b');
ALTER TABLE t1 ALGORITHM=COPY, MODIFY a VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_general_ci;
ERROR 22007: Incorrect string value: '\xC0' for column `test`.`t1`.`a` at row 3
ALTER TABLE t1 ALGORITHM=INSTANT, MODIFY a VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_general_ci;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
ALTER IGNORE TABLE t1 MODIFY a VARCHAR(10) CHARACTER SET latin1 COLLATE latin1_general_ci;
affected rows: 3
info: Records: 3  Duplicates: 0  Warnings: 1
Warnings:
Warning	1366	Incorrect string value: '\xC0' for column `test`.`t1`.`a` at row 3
SELECT HEX(a) FROM t1;
HEX(a)
3F
61
62
DROP TABLE t1;
#
# MDEV-19524 Server crashes in Bitmap<64u>::is_clear_all / Field_longstr::csinfo_change_allows_instant_alter
#
CREATE TABLE t1 (a VARCHAR(1), UNIQUE(a)) ENGINE=InnoDB;
ALTER TABLE t1 MODIFY a INT, ADD b INT, ADD UNIQUE (b), ALGORITHM=INSTANT;
ERROR 0A000: ALGORITHM=INSTANT is not supported. Reason: Cannot change column type. Try ALGORITHM=COPY
DROP TABLE t1;
#
# MDEV-17301 Change of COLLATE unnecessarily requires ALGORITHM=COPY
#
create table t (
a char(10) collate latin1_general_ci primary key,
b char(10) collate latin1_general_ci,
c char(10) collate latin1_general_ci,
unique key b_key(b)
) engine=innodb;
insert into t values
('aaa', 'aaa', 'aaa'), ('ccc', 'ccc', 'ccc'), ('bbb', 'bbb', 'bbb');
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table t modify b char(10) collate latin1_general_cs, algorithm=nocopy;
check table t;
Table	Op	Msg_type	Msg_text
test.t	check	status	OK
alter table t modify c char(10) collate latin1_general_cs, algorithm=instant;
check table t;
Table	Op	Msg_type	Msg_text
test.t	check	status	OK
drop table t;
create table t (
a varchar(10) collate latin1_general_ci primary key,
b varchar(10) collate latin1_general_ci,
c varchar(10) collate latin1_general_ci,
unique key b_key(b)
) engine=innodb;
insert into t values
('aaa', 'aaa', 'aaa'), ('ccc', 'ccc', 'ccc'), ('bbb', 'bbb', 'bbb');
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: ADD INDEX. Try ALGORITHM=NOCOPY
alter table t modify b varchar(10) collate latin1_general_cs, algorithm=nocopy;
check table t;
Table	Op	Msg_type	Msg_text
test.t	check	status	OK
alter table t modify c varchar(10) collate latin1_general_cs, algorithm=instant;
check table t;
Table	Op	Msg_type	Msg_text
test.t	check	status	OK
drop table t;
#
# MDEV-20726: InnoDB: Assertion failure in file data0type.cc line 67
#
CREATE TABLE t (
id int(10) unsigned NOT NULL PRIMARY KEY,
a text CHARSET utf8mb3,
KEY a_idx(a(1))
) ENGINE=InnoDB;
INSERT INTO t VALUES (1, 'something in the air');
ALTER TABLE t MODIFY a text CHARSET utf8mb4;
DROP TABLE t;
#
# MDEV-22899: Assertion `field->col->is_binary() || field->prefix_len % field->col->mbmaxlen == 0' failed in dict_index_add_to_cache
#
CREATE TABLE t1 (
a text CHARACTER SET utf8 DEFAULT NULL,
KEY a_key (a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a text CHARACTER SET utf8 DEFAULT NULL,
b int,
KEY a_key (b, a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a char(200) CHARACTER SET utf8 DEFAULT NULL,
KEY a_key (a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a char(200) CHARACTER SET utf8 DEFAULT NULL,
b int,
KEY a_key (b, a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a varchar(200) CHARACTER SET utf8 DEFAULT NULL,
KEY a_key (a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a varchar(200) CHARACTER SET utf8 DEFAULT NULL,
b int,
KEY a_key (b, a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a varchar(2000) CHARACTER SET utf8 DEFAULT NULL,
KEY a_key (a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
CREATE TABLE t1 (
a varchar(2000) CHARACTER SET utf8 DEFAULT NULL,
b int,
KEY a_key (b, a(1))
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ();
ALTER TABLE t1 MODIFY a text DEFAULT NULL;
DROP TABLE t1;
#
# MDEV-23245 Still getting assertion failure in file data0type.cc line 67
#
CREATE TABLE Foo
(
Bar char(2) CHARACTER SET utf8,
KEY Bar (Bar(1))
) ENGINE = InnoDB;
ALTER TABLE Foo MODIFY Bar char(2) CHARACTER SET utf8mb4;
INSERT INTO Foo VALUES ('a');
DROP TABLE Foo;
CREATE TABLE Foo
(
Bar varchar(2) CHARACTER SET utf8,
KEY Bar (Bar(1))
) ENGINE = InnoDB;
ALTER TABLE Foo MODIFY Bar varchar(2) CHARACTER SET utf8mb4;
INSERT INTO Foo VALUES ('a');
DROP TABLE Foo;
CREATE TABLE Foo
(
Bar text CHARACTER SET utf8,
KEY Bar (Bar(1))
) ENGINE = InnoDB;
ALTER TABLE Foo MODIFY Bar text CHARACTER SET utf8mb4;
INSERT INTO Foo VALUES ('a');
DROP TABLE Foo;
CREATE TABLE t1 (a VARCHAR(2) CHARACTER SET utf8mb3 COLLATE utf8mb3_unicode_ci,
PRIMARY KEY (a(1)))
ENGINE=InnoDB;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` varchar(2) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  PRIMARY KEY (`a`(1))
) ENGINE=InnoDB DEFAULT CHARSET=latin1
ALTER TABLE t1 MODIFY a VARCHAR(2)
CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
INSERT INTO t1 VALUES ('a');
DROP TABLE t1;
#
# MDEV-22775 [HY000][1553] Changing name of primary key column with foreign key constraint fails.
#
create table t1 (id int primary key) engine=innodb default charset=utf8;
create table t2 (input_id int primary key, id int not null,
key a (id),
constraint a foreign key (id) references t1  (id)
)engine=innodb default charset=utf8;
alter table t1 change id id2 int;
drop table t2;
drop table t1;