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Part2: MDEV-18156 Assertion 0' failed or btr_validate_index(index, 0, false)' in row_upd_sec_index_entry or error code 126: Index is corrupted upon DELETE with PAD_CHAR_TO_FULL_LENGTH

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This patch allows the server to open old tables that have
"bad" generated columns (i.e. indexed virtual generated columns,
persistent generated columns) that depend on sql_mode,
for general things like SELECT, INSERT, DROP, etc.
Warning are issued in such cases.

Only these commands are now disallowed and return an error:
- CREATE TABLE introducing a "bad" generated column
- ALTER TABLE introducing a "bad" generated column
- CREATE INDEX introdicing a "bad" generated column
  (i.e. adding an index on a virtual generated column
   that depends on sql_mode).

Note, these commands are allowed:
- ALTER TABLE removing a "bad" generate column
- ALTER TABLE removing an index from a "bad" virtual generated column
- DROP INDEX removing an index from a "bad" virtual generated column
but only if the table does not have any "bad" columns as a result.
This commit is contained in:
Alexander Barkov
2019-08-29 12:35:19 +04:00
parent dc719597ee
commit ef00ac4c86
15 changed files with 585 additions and 12 deletions
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mysql-test/std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYD Normal file
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mysql-test/suite/vcol/r/vcol_sql_mode.result
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@ -400,6 +400,12 @@ SHOW WARNINGS;
Level Code Message Level Code Message
Error 1901 Function or expression '`c`' cannot be used in the GENERATED ALWAYS AS clause of `v` Error 1901 Function or expression '`c`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
CREATE INDEX v ON t1 (v);
ERROR HY000: Function or expression '`c`' cannot be used in the GENERATED ALWAYS AS clause of `v`
SHOW WARNINGS;
Level Code Message
Error 1901 Function or expression '`c`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
DROP TABLE t1; DROP TABLE t1;
# A virtual column on the second position in an index - cannot depend on sql_mode # A virtual column on the second position in an index - cannot depend on sql_mode
CREATE TABLE t1 (id int, a CHAR(5), v TEXT AS (a) VIRTUAL, KEY(id, v(100))); CREATE TABLE t1 (id int, a CHAR(5), v TEXT AS (a) VIRTUAL, KEY(id, v(100)));

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mysql-test/suite/vcol/r/vcol_sql_mode_upgrade.result Normal file
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call mtr.add_suppression("Table rebuild required");
#
# Opening a Maria-10.2.26 table with a stored VARCHAR column
#
# Copying maria100226_char_to_vchar_stored.* to MYSQLD_DATADIR
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
FLUSH TABLES;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
FLUSH TABLES;
SELECT * FROM t1;
a v
1 1
2 2
3 3
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
SELECT * FROM t1;
a v
1 1
2 2
3 3
FLUSH TABLES;
SELECT * FROM t1;
a v
1 1
2 2
3 3
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
CREATE TABLE t2 LIKE t1;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
FLUSH TABLES;
CREATE TABLE t2 LIKE t1;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
ALTER TABLE t1 ADD b INT DEFAULT a;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t1;
a v
1 1
2 2
3 3
FLUSH TABLES;
ALTER TABLE t1 ADD c INT DEFAULT a;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
SELECT * FROM t1;
a v
1 1
2 2
3 3
DROP TABLE t1;
#
# Fixing a Maria-10.2.26 table with a stored VARCHAR column
#
# Fixing by dropping the generated stored column
# Copying maria100226_char_to_vchar_stored.* to MYSQLD_DATADIR
ALTER TABLE t1 DROP v;
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
SELECT * FROM t1;
a
1
2
3
DROP TABLE t1;
# Fixing by altering the generation expression of the stored column
# Copying maria100226_char_to_vchar_stored.* to MYSQLD_DATADIR
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
ALTER TABLE t1 MODIFY v VARCHAR(5) AS (RTRIM(a)) PERSISTENT;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (rtrim(`a`)) STORED
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t1;
#
# Opening a Maria-10.2.26 table with a virtual VARCHAR column
#
# Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
FLUSH TABLES;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
FLUSH TABLES;
SELECT * FROM t1;
a v
1 1
2 2
3 3
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
SELECT * FROM t1;
a v
1 1
2 2
3 3
FLUSH TABLES;
SELECT * FROM t1;
a v
1 1
2 2
3 3
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
CREATE TABLE t2 LIKE t1;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
FLUSH TABLES;
CREATE TABLE t2 LIKE t1;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
ALTER TABLE t1 ADD b INT DEFAULT a;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
FLUSH TABLES;
ALTER TABLE t1 ADD c INT DEFAULT a;
ERROR HY000: Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
SELECT * FROM t1;
a v
1 1
2 2
3 3
DROP TABLE t1;
#
# Fixing a Maria-10.2.26 table with a virtual VARCHAR column
#
# Fixing by dropping the virtual column
# Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
ALTER TABLE t1 DROP v;
SELECT * FROM t1;
a
1
2
3
DROP TABLE t1;
# Fixing by dropping a key on a virtual column, using ALTER TABLE
# Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
ALTER TABLE t1 DROP KEY v;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t1;
a v
1 1
2 2
3 3
DROP TABLE t1;
# Fixing by dropping a key on a virtual column, using DROP INDEX
# Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
DROP INDEX v ON t1;
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t1;
a v
1 1
2 2
3 3
DROP TABLE t1;
# Fixing by altering the generation expression of a virtual column
# Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (`a`) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
Warnings:
Warning 1901 Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
Warning 1105 Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
ALTER TABLE t1 MODIFY v VARCHAR(5) AS(RTRIM(a)) VIRTUAL;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (rtrim(`a`)) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
SELECT * FROM t1;
a v
1 1
2 2
3 3
CREATE TABLE t2 LIKE t1;
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` char(5) DEFAULT NULL,
`v` varchar(5) GENERATED ALWAYS AS (rtrim(`a`)) VIRTUAL,
KEY `v` (`v`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
DROP TABLE t2;
DROP TABLE t1;
#
# Upgrading a Maria-10.2.26 table with a stored column
#
# Copying maria100226_char_to_varchar.* to MYSQLD_DATADIR
CHECK TABLE t1 FOR UPGRADE;
Table Op Msg_type Msg_text
test.t1 check Warning Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
test.t1 check Warning Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
test.t1 check status OK
FLUSH TABLES;
CHECK TABLE t1 FOR UPGRADE;
Table Op Msg_type Msg_text
test.t1 check Warning Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
test.t1 check Warning Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
test.t1 check status OK
DROP TABLE t1;
#
# Upgrading a Maria-10.2.26 table with a virtual column
#
# Copying maria100226_char_to_varchar.* to MYSQLD_DATADIR
CHECK TABLE t1 FOR UPGRADE;
Table Op Msg_type Msg_text
test.t1 check Warning Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
test.t1 check Warning Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
test.t1 check status OK
FLUSH TABLES;
CHECK TABLE t1 FOR UPGRADE;
Table Op Msg_type Msg_text
test.t1 check Warning Function or expression '`a`' cannot be used in the GENERATED ALWAYS AS clause of `v`
test.t1 check Warning Expression depends on the @@sql_mode value PAD_CHAR_TO_FULL_LENGTH
test.t1 check status OK
DROP TABLE t1;

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mysql-test/suite/vcol/t/vcol_sql_mode.test
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@ -294,6 +294,9 @@ CREATE TABLE t1 (
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED --error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
ALTER TABLE t1 ADD KEY(v); ALTER TABLE t1 ADD KEY(v);
SHOW WARNINGS; SHOW WARNINGS;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
CREATE INDEX v ON t1 (v);
SHOW WARNINGS;
DROP TABLE t1; DROP TABLE t1;

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mysql-test/suite/vcol/t/vcol_sql_mode_upgrade.test Normal file
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@ -0,0 +1,193 @@
-- source include/mysql_upgrade_preparation.inc
call mtr.add_suppression("Table rebuild required");
let $MYSQLD_DATADIR= `select @@datadir`;
--enable_prepare_warnings
--echo #
--echo # Opening a Maria-10.2.26 table with a stored VARCHAR column
--echo #
--echo # Copying maria100226_char_to_vchar_stored.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYI $MYSQLD_DATADIR/test/t1.MYI
SHOW CREATE TABLE t1;
SHOW CREATE TABLE t1;
FLUSH TABLES;
SHOW CREATE TABLE t1;
FLUSH TABLES;
SELECT * FROM t1;
SELECT * FROM t1;
FLUSH TABLES;
SELECT * FROM t1;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
CREATE TABLE t2 LIKE t1;
FLUSH TABLES;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
CREATE TABLE t2 LIKE t1;
SHOW CREATE TABLE t1;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
ALTER TABLE t1 ADD b INT DEFAULT a;
SHOW CREATE TABLE t1;
SELECT * FROM t1;
FLUSH TABLES;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
ALTER TABLE t1 ADD c INT DEFAULT a;
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # Fixing a Maria-10.2.26 table with a stored VARCHAR column
--echo #
--echo # Fixing by dropping the generated stored column
--echo # Copying maria100226_char_to_vchar_stored.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYI $MYSQLD_DATADIR/test/t1.MYI
ALTER TABLE t1 DROP v;
SELECT * FROM t1;
DROP TABLE t1;
--echo # Fixing by altering the generation expression of the stored column
--echo # Copying maria100226_char_to_vchar_stored.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYI $MYSQLD_DATADIR/test/t1.MYI
SHOW CREATE TABLE t1;
ALTER TABLE t1 MODIFY v VARCHAR(5) AS (RTRIM(a)) PERSISTENT;
SHOW CREATE TABLE t1;
DROP TABLE t1;
--echo #
--echo # Opening a Maria-10.2.26 table with a virtual VARCHAR column
--echo #
--echo # Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYI $MYSQLD_DATADIR/test/t1.MYI
SHOW CREATE TABLE t1;
SHOW CREATE TABLE t1;
FLUSH TABLES;
SHOW CREATE TABLE t1;
FLUSH TABLES;
SELECT * FROM t1;
SELECT * FROM t1;
FLUSH TABLES;
SELECT * FROM t1;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
CREATE TABLE t2 LIKE t1;
FLUSH TABLES;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
CREATE TABLE t2 LIKE t1;
SHOW CREATE TABLE t1;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
ALTER TABLE t1 ADD b INT DEFAULT a;
FLUSH TABLES;
--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
ALTER TABLE t1 ADD c INT DEFAULT a;
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # Fixing a Maria-10.2.26 table with a virtual VARCHAR column
--echo #
--echo # Fixing by dropping the virtual column
--echo # Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYI $MYSQLD_DATADIR/test/t1.MYI
SHOW CREATE TABLE t1;
ALTER TABLE t1 DROP v;
SELECT * FROM t1;
DROP TABLE t1;
--echo # Fixing by dropping a key on a virtual column, using ALTER TABLE
--echo # Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYI $MYSQLD_DATADIR/test/t1.MYI
SHOW CREATE TABLE t1;
ALTER TABLE t1 DROP KEY v;
SHOW CREATE TABLE t1;
SELECT * FROM t1;
DROP TABLE t1;
--echo # Fixing by dropping a key on a virtual column, using DROP INDEX
--echo # Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYI $MYSQLD_DATADIR/test/t1.MYI
DROP INDEX v ON t1;
SHOW CREATE TABLE t1;
SELECT * FROM t1;
DROP TABLE t1;
--echo # Fixing by altering the generation expression of a virtual column
--echo # Copying maria100226_char_to_vchar_virtual.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYI $MYSQLD_DATADIR/test/t1.MYI
SHOW CREATE TABLE t1;
ALTER TABLE t1 MODIFY v VARCHAR(5) AS(RTRIM(a)) VIRTUAL;
SHOW CREATE TABLE t1;
SELECT * FROM t1;
CREATE TABLE t2 LIKE t1;
SHOW CREATE TABLE t2;
DROP TABLE t2;
DROP TABLE t1;
--echo #
--echo # Upgrading a Maria-10.2.26 table with a stored column
--echo #
--echo # Copying maria100226_char_to_varchar.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_stored.MYI $MYSQLD_DATADIR/test/t1.MYI
CHECK TABLE t1 FOR UPGRADE;
FLUSH TABLES;
CHECK TABLE t1 FOR UPGRADE;
DROP TABLE t1;
--echo #
--echo # Upgrading a Maria-10.2.26 table with a virtual column
--echo #
--echo # Copying maria100226_char_to_varchar.* to MYSQLD_DATADIR
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.frm $MYSQLD_DATADIR/test/t1.frm
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYD $MYSQLD_DATADIR/test/t1.MYD
--copy_file std_data/vcol_upgrade/maria100226_char_to_vchar_virtual.MYI $MYSQLD_DATADIR/test/t1.MYI
CHECK TABLE t1 FOR UPGRADE;
FLUSH TABLES;
CHECK TABLE t1 FOR UPGRADE;
DROP TABLE t1;

13
sql/field.cc
View File

@ -1428,14 +1428,16 @@ void Field::load_data_set_value(const char *pos, uint length,
} }
void Field::error_generated_column_function_is_not_allowed(THD *thd) const void Field::error_generated_column_function_is_not_allowed(THD *thd,
bool error) const
{ {
StringBuffer<64> tmp; StringBuffer<64> tmp;
vcol_info->expr->print(&tmp, (enum_query_type) vcol_info->expr->print(&tmp, (enum_query_type)
(QT_TO_SYSTEM_CHARSET | (QT_TO_SYSTEM_CHARSET |
QT_ITEM_IDENT_SKIP_DB_NAMES | QT_ITEM_IDENT_SKIP_DB_NAMES |
QT_ITEM_IDENT_SKIP_TABLE_NAMES)); QT_ITEM_IDENT_SKIP_TABLE_NAMES));
my_error(ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED, MYF(0), my_error(ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED,
MYF(error ? 0 : ME_JUST_WARNING),
tmp.c_ptr(), vcol_info->get_vcol_type_name(), tmp.c_ptr(), vcol_info->get_vcol_type_name(),
const_cast<const char*>(field_name)); const_cast<const char*>(field_name));
} }
@ -1446,7 +1448,7 @@ void Field::error_generated_column_function_is_not_allowed(THD *thd) const
that it cannot handle. that it cannot handle.
See sql_mode.h for details. See sql_mode.h for details.
*/ */
bool Field::check_vcol_sql_mode_dependency(THD *thd) const bool Field::check_vcol_sql_mode_dependency(THD *thd, vcol_init_mode mode) const
{ {
DBUG_ASSERT(vcol_info); DBUG_ASSERT(vcol_info);
if ((flags & PART_KEY_FLAG) != 0 || stored_in_db()) if ((flags & PART_KEY_FLAG) != 0 || stored_in_db())
@ -1456,9 +1458,10 @@ bool Field::check_vcol_sql_mode_dependency(THD *thd) const
Sql_mode_dependency(~0, ~can_handle_sql_mode_dependency_on_store()); Sql_mode_dependency(~0, ~can_handle_sql_mode_dependency_on_store());
if (dep) if (dep)
{ {
error_generated_column_function_is_not_allowed(thd); bool error= (mode & VCOL_INIT_DEPENDENCY_FAILURE_IS_ERROR) != 0;
error_generated_column_function_is_not_allowed(thd, error);
dep.push_dependency_warnings(thd); dep.push_dependency_warnings(thd);
return true; return error;
} }
} }
return false; return false;

5
sql/field.h
View File

@ -697,7 +697,8 @@ protected:
val_str(&result); val_str(&result);
return to->store(result.ptr(), result.length(), charset()); return to->store(result.ptr(), result.length(), charset());
} }
void error_generated_column_function_is_not_allowed(THD *thd) const; void error_generated_column_function_is_not_allowed(THD *thd, bool error)
const;
static void do_field_int(Copy_field *copy); static void do_field_int(Copy_field *copy);
static void do_field_real(Copy_field *copy); static void do_field_real(Copy_field *copy);
static void do_field_string(Copy_field *copy); static void do_field_string(Copy_field *copy);
@ -1175,7 +1176,7 @@ public:
} }
bool stored_in_db() const { return !vcol_info || vcol_info->stored_in_db; } bool stored_in_db() const { return !vcol_info || vcol_info->stored_in_db; }
bool check_vcol_sql_mode_dependency(THD *) const; bool check_vcol_sql_mode_dependency(THD *, vcol_init_mode mode) const;
virtual sql_mode_t value_depends_on_sql_mode() const virtual sql_mode_t value_depends_on_sql_mode() const
{ {

3
sql/sql_insert.cc
View File

@ -2529,7 +2529,8 @@ TABLE *Delayed_insert::get_local_table(THD* client_thd)
sizeof(MY_BITMAP)))) sizeof(MY_BITMAP))))
goto error; goto error;
if (parse_vcol_defs(client_thd, client_thd->mem_root, copy, &error_reported)) if (parse_vcol_defs(client_thd, client_thd->mem_root, copy, &error_reported,
VCOL_INIT_DEPENDENCY_FAILURE_IS_WARNING))
goto error; goto error;
} }

22
sql/table.cc
View File

@ -989,7 +989,7 @@ static void mysql57_calculate_null_position(TABLE_SHARE *share,
expression expression
*/ */
bool parse_vcol_defs(THD *thd, MEM_ROOT *mem_root, TABLE *table, bool parse_vcol_defs(THD *thd, MEM_ROOT *mem_root, TABLE *table,
bool *error_reported) bool *error_reported, vcol_init_mode mode)
{ {
CHARSET_INFO *save_character_set_client= thd->variables.character_set_client; CHARSET_INFO *save_character_set_client= thd->variables.character_set_client;
CHARSET_INFO *save_collation= thd->variables.collation_connection; CHARSET_INFO *save_collation= thd->variables.collation_connection;
@ -1073,7 +1073,7 @@ bool parse_vcol_defs(THD *thd, MEM_ROOT *mem_root, TABLE *table,
vcol= unpack_vcol_info_from_frm(thd, mem_root, table, &expr_str, vcol= unpack_vcol_info_from_frm(thd, mem_root, table, &expr_str,
&((*field_ptr)->vcol_info), error_reported); &((*field_ptr)->vcol_info), error_reported);
*(vfield_ptr++)= *field_ptr; *(vfield_ptr++)= *field_ptr;
if (vcol && field_ptr[0]->check_vcol_sql_mode_dependency(thd)) if (vcol && field_ptr[0]->check_vcol_sql_mode_dependency(thd, mode))
{ {
DBUG_ASSERT(thd->is_error()); DBUG_ASSERT(thd->is_error());
*error_reported= true; *error_reported= true;
@ -3223,7 +3223,23 @@ enum open_frm_error open_table_from_share(THD *thd, TABLE_SHARE *share,
if (share->table_check_constraints || share->field_check_constraints) if (share->table_check_constraints || share->field_check_constraints)
outparam->check_constraints= check_constraint_ptr; outparam->check_constraints= check_constraint_ptr;
if (parse_vcol_defs(thd, &outparam->mem_root, outparam, &error_reported)) vcol_init_mode mode= VCOL_INIT_DEPENDENCY_FAILURE_IS_WARNING;
switch (thd->lex->sql_command)
{
case SQLCOM_CREATE_TABLE:
mode= VCOL_INIT_DEPENDENCY_FAILURE_IS_ERROR;
break;
case SQLCOM_ALTER_TABLE:
case SQLCOM_CREATE_INDEX:
case SQLCOM_DROP_INDEX:
if ((ha_open_flags & HA_OPEN_FOR_ALTER) == 0)
mode= VCOL_INIT_DEPENDENCY_FAILURE_IS_ERROR;
break;
default:
break;
}
if (parse_vcol_defs(thd, &outparam->mem_root, outparam,
&error_reported, mode))
{ {
error= OPEN_FRM_CORRUPTED; error= OPEN_FRM_CORRUPTED;
goto err; goto err;

16
sql/table.h
View File

@ -325,6 +325,20 @@ enum tmp_table_type
}; };
enum release_type { RELEASE_NORMAL, RELEASE_WAIT_FOR_DROP }; enum release_type { RELEASE_NORMAL, RELEASE_WAIT_FOR_DROP };
enum vcol_init_mode
{
VCOL_INIT_DEPENDENCY_FAILURE_IS_WARNING= 1,
VCOL_INIT_DEPENDENCY_FAILURE_IS_ERROR= 2
/*
There may be new flags here.
e.g. to automatically remove sql_mode dependency:
GENERATED ALWAYS AS (char_col) ->
GENERATED ALWAYS AS (RTRIM(char_col))
*/
};
enum enum_vcol_update_mode enum enum_vcol_update_mode
{ {
VCOL_UPDATE_FOR_READ= 0, VCOL_UPDATE_FOR_READ= 0,
@ -2736,7 +2750,7 @@ bool fix_session_vcol_expr(THD *thd, Virtual_column_info *vcol);
bool fix_session_vcol_expr_for_read(THD *thd, Field *field, bool fix_session_vcol_expr_for_read(THD *thd, Field *field,
Virtual_column_info *vcol); Virtual_column_info *vcol);
bool parse_vcol_defs(THD *thd, MEM_ROOT *mem_root, TABLE *table, bool parse_vcol_defs(THD *thd, MEM_ROOT *mem_root, TABLE *table,
bool *error_reported); bool *error_reported, vcol_init_mode expr);
TABLE_SHARE *alloc_table_share(const char *db, const char *table_name, TABLE_SHARE *alloc_table_share(const char *db, const char *table_name,
const char *key, uint key_length); const char *key, uint key_length);
void init_tmp_table_share(THD *thd, TABLE_SHARE *share, const char *key, void init_tmp_table_share(THD *thd, TABLE_SHARE *share, const char *key,