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|
##############################################
# Test instant ADD/DROP COLUMN for REDUNDANT format
##############################################
SET @saved_innodb_strict_mode=@@SESSION.innodb_strict_mode;
# ------------------------------------------------------------
# Create a table with 3 columns. [id, c2, c3]
# ------------------------------------------------------------
CREATE TABLE t1(id INT PRIMARY KEY, c1 VARCHAR(4000), c2 VARCHAR(4000)) ROW_FORMAT=REDUNDANT;;
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1 6 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
id 0 6 1283 0
c1 1 12 16715791 0
c2 2 12 16715791 0
SET SESSION innodb_strict_mode=OFF;
# ------------------------------------------------------------
# Add a new column. It causes max_row_size > permissible size
# ------------------------------------------------------------
ALTER TABLE t1 ADD COLUMN c3 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 ADD COLUMN c3 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd';
Warnings:
Warning 139 Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
id 0 6 1283 0
c1 1 12 16715791 0
c2 2 12 16715791 0
c3 3 12 16716047 0
INSERT INTO t1 (id, c1, c2) VALUES(1, repeat('a', 4000), repeat('b', 4000));
ERROR 42000: Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
INSERT INTO t1 (id, c1, c2) VALUES(1, repeat('a', 4), repeat('b', 4));
SELECT id, LEFT(c1 , 10), LEFT(c2, 10), LEFT(c3, 10) FROM t1 ORDER BY id;
id LEFT(c1 , 10) LEFT(c2, 10) LEFT(c3, 10)
1 aaaa bbbb dddddddddd
ALTER TABLE t1 ADD COLUMN c4 INT, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 DROP COLUMN c3, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
###########
# CLEANUP #
###########
DROP TABLE t1;
SET SESSION innodb_strict_mode=@saved_innodb_strict_mode;
# ------------------------------------------------------------
# Create a partition table with 3 columns. [c1, c2, c3, c4]
# ------------------------------------------------------------
CREATE TABLE t1 (c1 INT, c2 INT, c3 INT, c4 TEXT) ROW_FORMAT=REDUNDANT PARTITION BY RANGE(c1 * 2) ( PARTITION p0 VALUES LESS THAN (128), PARTITION p1 VALUES LESS THAN (256) , PARTITION p2 VALUES LESS THAN (384) , PARTITION p3 VALUES LESS THAN MAXVALUE);;
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p0 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p1 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p2 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p3 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
SET SESSION innodb_strict_mode=OFF;
# ------------------------------------------------------------
# Add new columns. It causes max_row_size > permissible size
# ------------------------------------------------------------
ALTER TABLE t1 ADD COLUMN c5 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', ADD COLUMN c6 TEXT, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 ADD COLUMN c5 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', ADD COLUMN c6 TEXT;
Warnings:
Warning 139 Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p0 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p1 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p2 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p3 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
INSERT INTO t1 (c1, c2, c3, c4, c6) VALUES(1, 2, 3, repeat('a', 1000), repeat('c', 1000));
ERROR 42000: Row size too large (> 1979). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
INSERT INTO t1 (c1, c2, c3, c4, c6) VALUES(1, 2, 3, 'abcdefg', 'hijklmnop');
SELECT c1, c2, c3, c4, LEFT(c5 , 10), c6 from t1;
c1 c2 c3 c4 LEFT(c5 , 10) c6
1 2 3 abcdefg dddddddddd hijklmnop
ALTER TABLE t1 ADD COLUMN c7 INT, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 DROP COLUMN c6, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
###########
# CLEANUP #
###########
DROP TABLE t1;
SET SESSION innodb_strict_mode=@saved_innodb_strict_mode;
############################################
# No need to run for DYNAMIC
############################################
############################################
# Test instant ADD/DROP COLUMN for COMPACT format
############################################
SET @saved_innodb_strict_mode=@@SESSION.innodb_strict_mode;
# ------------------------------------------------------------
# Create a table with 3 columns. [id, c2, c3]
# ------------------------------------------------------------
CREATE TABLE t1(id INT PRIMARY KEY, c1 VARCHAR(4000), c2 VARCHAR(4000)) ROW_FORMAT=COMPACT;;
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1 6 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
id 0 6 1283 0
c1 1 12 16715791 0
c2 2 12 16715791 0
SET SESSION innodb_strict_mode=OFF;
# ------------------------------------------------------------
# Add a new column. It causes max_row_size > permissible size
# ------------------------------------------------------------
ALTER TABLE t1 ADD COLUMN c3 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 ADD COLUMN c3 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd';
Warnings:
Warning 139 Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
id 0 6 1283 0
c1 1 12 16715791 0
c2 2 12 16715791 0
c3 3 12 16716047 0
INSERT INTO t1 (id, c1, c2) VALUES(1, repeat('a', 4000), repeat('b', 4000));
ERROR 42000: Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
INSERT INTO t1 (id, c1, c2) VALUES(1, repeat('a', 4), repeat('b', 4));
SELECT id, LEFT(c1 , 10), LEFT(c2, 10), LEFT(c3, 10) FROM t1 ORDER BY id;
id LEFT(c1 , 10) LEFT(c2, 10) LEFT(c3, 10)
1 aaaa bbbb dddddddddd
ALTER TABLE t1 ADD COLUMN c4 INT, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 DROP COLUMN c3, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
###########
# CLEANUP #
###########
DROP TABLE t1;
SET SESSION innodb_strict_mode=@saved_innodb_strict_mode;
# ------------------------------------------------------------
# Create a partition table with 3 columns. [c1, c2, c3, c4]
# ------------------------------------------------------------
CREATE TABLE t1 (c1 INT, c2 INT, c3 INT, c4 TEXT) ROW_FORMAT=COMPACT PARTITION BY RANGE(c1 * 2) ( PARTITION p0 VALUES LESS THAN (128), PARTITION p1 VALUES LESS THAN (256) , PARTITION p2 VALUES LESS THAN (384) , PARTITION p3 VALUES LESS THAN MAXVALUE);;
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p0 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p1 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p2 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p3 7 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
SET SESSION innodb_strict_mode=OFF;
# ------------------------------------------------------------
# Add new columns. It causes max_row_size > permissible size
# ------------------------------------------------------------
ALTER TABLE t1 ADD COLUMN c5 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', ADD COLUMN c6 TEXT, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 ADD COLUMN c5 VARCHAR(500) NOT NULL DEFAULT 'dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd', ADD COLUMN c6 TEXT;
Warnings:
Warning 139 Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
Warning 139 Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p0 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p1 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p2 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
# Metadata from INFORMATION_SCHEMA.TABLES
NAME N_COLS INSTANT_COLS TOTAL_ROW_VERSIONS
test/t1#p#p3 9 0 0
# Metadata from INFORMATION_SCHEMA.COLUMNS
NAME POS MTYPE PRTYPE HAS_DEFAULT
c1 0 6 1027 0
c2 1 6 1027 0
c3 2 6 1027 0
c4 3 5 16711932 0
c5 4 12 16716047 0
c6 5 5 16711932 0
INSERT INTO t1 (c1, c2, c3, c4, c6) VALUES(1, 2, 3, repeat('a', 1000), repeat('c', 1000));
ERROR 42000: Row size too large (> 1982). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.
INSERT INTO t1 (c1, c2, c3, c4, c6) VALUES(1, 2, 3, 'abcdefg', 'hijklmnop');
SELECT c1, c2, c3, c4, LEFT(c5 , 10), c6 from t1;
c1 c2 c3 c4 LEFT(c5 , 10) c6
1 2 3 abcdefg dddddddddd hijklmnop
ALTER TABLE t1 ADD COLUMN c7 INT, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
ALTER TABLE t1 DROP COLUMN c6, ALGORITHM=INSTANT;
ERROR HY000: Column can't be added or dropped with ALGORITHM=INSTANT as either max possible row size already crosses max permissible row size or may cross it after add. Try ALGORITHM=INPLACE/COPY.
###########
# CLEANUP #
###########
DROP TABLE t1;
SET SESSION innodb_strict_mode=@saved_innodb_strict_mode;
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