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CREATE TABLE `t` (
`a` BLOB,
`b` BLOB,
`c` BLOB GENERATED ALWAYS AS (CONCAT(a,b)) VIRTUAL,
`h` VARCHAR(10) DEFAULT NULL,
`i` int
) ENGINE=InnoDB;
INSERT INTO t VALUES (REPEAT('g', 16000), REPEAT('x', 16000), DEFAULT, "kk", 1);
INSERT INTO t VALUES (REPEAT('a', 16000), REPEAT('b', 16000), DEFAULT, "mm", 2);
CREATE INDEX idx ON t(c(100));
SET global debug="+d,ib_purge_virtual_index_callback";
UPDATE t SET a = REPEAT('m', 16000) WHERE a like "aaa%";
select sleep(3);
sleep(3)
0
SET global debug="-d,ib_purge_virtual_index_callback";
DROP TABLE t;
CREATE TABLE t (
a TINYBLOB,
b TINYBLOB,
c TINYBLOB GENERATED ALWAYS AS (CONCAT(a,b)) VIRTUAL,
h VARCHAR(10) DEFAULT NULL,
i INT
) ROW_FORMAT=COMPACT ENGINE=InnoDB;
INSERT INTO t VALUES (REPEAT('g', 100), REPEAT('x', 100), DEFAULT, "kk", 1);
INSERT INTO t VALUES (REPEAT('a', 100), REPEAT('b', 100), DEFAULT, "mm", 2);
CREATE INDEX idx ON t(c(100));
SET global debug="+d,ib_purge_virtual_index_callback";
UPDATE t SET a = REPEAT('m', 100) WHERE a like "aaa%";
select sleep(3);
sleep(3)
0
SET global debug="-d,ib_purge_virtual_index_callback";
DROP TABLE t;
CREATE TABLE t1 (
id INT NOT NULL,
store_id INT NOT NULL,
x INT GENERATED ALWAYS AS (id + store_id)
)
PARTITION BY RANGE (store_id) (
PARTITION p0 VALUES LESS THAN (6),
PARTITION p1 VALUES LESS THAN (11),
PARTITION p2 VALUES LESS THAN (16),
PARTITION p3 VALUES LESS THAN (21)
);
insert into t1 values(1, 2, default);
insert into t1 values(3, 4, default);
insert into t1 values(3, 12, default);
insert into t1 values(4, 18, default);
CREATE INDEX idx ON t1(x);
SET global debug="+d,ib_purge_virtual_index_callback";
UPDATE t1 SET id = 10 WHERE id = 1;
select sleep(3);
sleep(3)
0
SET global debug="-d,ib_purge_virtual_index_callback";
DROP TABLE t1;
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1(a, b) VALUES (1, 1), (2, 2), (3, 3);
# disable purge
CREATE TABLE t0 (a INT) ENGINE=InnoDB;
BEGIN;
SELECT * FROM t0;
a
DELETE FROM t1 WHERE a = 1;
UPDATE t1 SET a = 4, b = 4 WHERE a = 3;
INSERT INTO t1(a, b) VALUES (5, 5);
SET DEBUG_SYNC= 'inplace_after_index_build SIGNAL uncommitted WAIT_FOR purged';
ALTER TABLE t1 ADD COLUMN c INT GENERATED ALWAYS AS(a+b), ADD INDEX idx (c), ALGORITHM=INPLACE, LOCK=NONE;
ERROR 0A000: LOCK=NONE is not supported. Reason: ADD COLUMN col...VIRTUAL, ADD INDEX(col). Try LOCK=SHARED.
ALTER TABLE t1 ADD COLUMN c INT GENERATED ALWAYS AS(a+b), ADD INDEX idx (c), ALGORITHM=INPLACE, LOCK=SHARED;
SET DEBUG_SYNC= 'now WAIT_FOR uncommitted';
# enable purge
COMMIT;
# wait for purge to process the deleted records.
set global innodb_purge_run_now=ON;
select sleep(1);
sleep(1)
0
SET DEBUG_SYNC= 'now SIGNAL purged';
/* connection default */ ALTER TABLE t1 ADD COLUMN c INT GENERATED ALWAYS AS(a+b), ADD INDEX idx (c), ALGORITHM=INPLACE, LOCK=SHARED;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int DEFAULT NULL,
`b` int DEFAULT NULL,
`c` int GENERATED ALWAYS AS ((`a` + `b`)) VIRTUAL,
KEY `idx` (`c`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * FROM t1;
a b c
2 2 4
4 4 8
5 5 10
DROP TABLE t1;
CREATE TABLE t1 (a INT, b INT, c INT GENERATED ALWAYS AS(a+b));
INSERT INTO t1(a, b) VALUES (1, 1), (2, 2), (3, 3), (4, 4);
# disable purge
BEGIN;
SELECT * FROM t0;
a
DELETE FROM t1 WHERE a = 1;
UPDATE t1 SET a = 2, b = 2 WHERE a = 5;
INSERT INTO t1(a, b) VALUES (6, 6);
SET DEBUG_SYNC= 'inplace_after_index_build SIGNAL uncommitted WAIT_FOR purged';
ALTER TABLE t1 ADD INDEX idx (c), ALGORITHM=INPLACE, LOCK=NONE;
SET DEBUG_SYNC= 'now WAIT_FOR uncommitted';
DELETE FROM t1 WHERE a = 3;
UPDATE t1 SET a = 7, b = 7 WHERE a = 4;
INSERT INTO t1(a, b) VALUES (8, 8);
# enable purge
COMMIT;
# wait for purge to process the deleted/updated records.
set global innodb_purge_run_now=ON;
select sleep(1);
sleep(1)
0
SET DEBUG_SYNC= 'now SIGNAL purged';
/* connection default */ ALTER TABLE t1 ADD INDEX idx (c), ALGORITHM=INPLACE, LOCK=NONE;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int DEFAULT NULL,
`b` int DEFAULT NULL,
`c` int GENERATED ALWAYS AS ((`a` + `b`)) VIRTUAL,
KEY `idx` (`c`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SELECT * FROM t1;
a b c
2 2 4
7 7 14
6 6 12
8 8 16
DROP TABLE t0, t1;
#
# Bug#21869656 UNDO LOG DOES NOT CONTAIN ENOUGH INFORMATION
# ON INDEXED VIRTUAL COLUMNS
#
CREATE TABLE t1 (a INT, b INT,
a1 INT GENERATED ALWAYS AS (a) VIRTUAL, INDEX(a1)
) ENGINE=InnoDB;
INSERT INTO t1 (a,b) VALUES(1,1);
CREATE TABLE t0 (a INT) ENGINE=InnoDB;
BEGIN;
SELECT * FROM t0;
a
UPDATE t1 SET a=0;
ALTER TABLE t1 DROP COLUMN a1, ALGORITHM=INPLACE;
ALTER TABLE t1 ADD COLUMN b1 INT GENERATED ALWAYS AS (b) VIRTUAL, ADD
INDEX(b1),
ALGORITHM=INPLACE;
COMMIT;
UPDATE t1 SET a=1;
set global innodb_purge_run_now=ON;
select sleep(1);
sleep(1)
0
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT b1 FROM t1;
b1
1
ALTER TABLE t1
ADD COLUMN a1 INT GENERATED ALWAYS AS (a) VIRTUAL,
ADD COLUMN a2 INT GENERATED ALWAYS AS (a + b) VIRTUAL,
ADD COLUMN a3 INT GENERATED ALWAYS AS (a - b) VIRTUAL,
ADD COLUMN a4 INT GENERATED ALWAYS AS (a - b) VIRTUAL,
ADD INDEX(a1), ADD INDEX(a2), ADD INDEX(a3), ALGORITHM=INPLACE;
CREATE TABLE t2 (
a BLOB,
b BLOB,
c BLOB GENERATED ALWAYS AS (CONCAT(a,b)) VIRTUAL,
h VARCHAR(10) DEFAULT NULL
) ENGINE=InnoDB;
INSERT INTO t2 VALUES (REPEAT('g', 16000), REPEAT('x', 16000), DEFAULT, 'kk');
INSERT INTO t2 VALUES (REPEAT('a', 16000), REPEAT('b', 16000), DEFAULT, 'mm');
CREATE INDEX idx ON t2(c(100));
INSERT INTO t1 (a, b) VALUES(1,1);
BEGIN;
SELECT * FROM t0;
a
UPDATE t1 SET a=0;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
UPDATE t1 SET b=0;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
ALTER TABLE t1 DROP COLUMN a3, ALGORITHM=INPLACE;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET a=2;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
ALTER TABLE t1 DROP COLUMN a2, ALGORITHM=INPLACE;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET b=3;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
ALTER TABLE t1 ADD COLUMN b2 INT GENERATED ALWAYS AS (b) VIRTUAL,
ADD INDEX(b2), ALGORITHM=INPLACE;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET b=9;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
ALTER TABLE t1 ADD COLUMN b3 INT GENERATED ALWAYS AS (a) VIRTUAL,
ADD INDEX(b3), ALGORITHM=INPLACE;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET b=10;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
ALTER TABLE t2 DROP COLUMN c;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t2 SET a = REPEAT('s', 6000) WHERE a like 'aaa%';
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
ALTER TABLE t2 ADD COLUMN x1 BLOB GENERATED ALWAYS AS (CONCAT(a,b)) VIRTUAL,
ADD COLUMN x2 BLOB GENERATED ALWAYS AS (CONCAT(a,b)) VIRTUAL,
ADD INDEX(x1(100), x2(120)), ADD INDEX (x1(20));
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET a=5;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
UPDATE t2 SET a = REPEAT('m', 16000) WHERE a like 'sss%';
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
ALTER TABLE t1 DROP COLUMN b2, ALGORITHM=INPLACE;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET a=6;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
ALTER TABLE t2 DROP COLUMN x1, DROP COLUMN x2, ALGORITHM=INPLACE;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t2 SET a = REPEAT('x', 1000) WHERE a like 'mmm%';
affected rows: 1
info: Rows matched: 1 Changed: 1 Warnings: 0
ALTER TABLE t1 DROP INDEX b3;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
UPDATE t1 SET a=100;
affected rows: 2
info: Rows matched: 2 Changed: 2 Warnings: 0
COMMIT;
set global innodb_purge_run_now=ON;
select sleep(1);
sleep(1)
0
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT b1 FROM t1;
b1
10
10
SELECT * FROM t1;
a b b1 a1 a4 b3
100 10 10 100 90 100
100 10 10 100 90 100
CHECK TABLE t2;
Table Op Msg_type Msg_text
test.t2 check status OK
DROP TABLE t2, t1, t0;
CREATE TABLE t1 (a VARCHAR(30), b INT, a2 VARCHAR(30) GENERATED ALWAYS AS (a) VIRTUAL);
CREATE INDEX idx ON t1(a2(10), b, a2(20));
ERROR 42S21: Duplicate column name 'a2'
DROP TABLE t1;
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