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--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
set names cp932;
create table t1 (c1 VARCHAR(10) NOT NULL COMMENT '', c2 INTEGER COMMENT '',c3 INTEGER COMMENT '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789', c4 INTEGER, c5 INTEGER, c6 INTEGER, c7 INTEGER, INDEX i1 (c1) COMMENT 'i1 comment',INDEX i2(c2)
) COMMENT='';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
ALTER TABLE t1 ADD COLUMN c8 INTEGER COMMENT '';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
ALTER TABLE t1 ADD COLUMN c9 INTEGER COMMENT '';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
ALTER TABLE t1 ADD COLUMN c10 INTEGER COMMENT '';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
ALTER TABLE t1 MODIFY COLUMN c8 CHAR(10);
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
ALTER TABLE t1 CHANGE COLUMN c9 c9_1 INTEGER COMMENT '1234567890';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
ALTER TABLE t1 DROP COLUMN c1;
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
# comment overflow(warning)
SET STATEMENT sql_mode = 'NO_ENGINE_SUBSTITUTION' FOR
ALTER TABLE t1 ADD COLUMN c11 INTEGER COMMENT '';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
# comment overflow(error)
set sql_mode='TRADITIONAL';
--error ER_TOO_LONG_FIELD_COMMENT
ALTER TABLE t1 ADD COLUMN c12 INTEGER COMMENT '';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
set sql_mode='';
ALTER TABLE t1 ADD COLUMN c12 CHAR(100) COMMENT '';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
# comment overflow(warning)
drop table t1;
create table t1 (c1 VARCHAR(10) NOT NULL COMMENT '', c2 INTEGER COMMENT '',c3 INTEGER COMMENT '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789', c4 INTEGER, c5 INTEGER, c6 INTEGER, c7 INTEGER, INDEX i1 (c1) COMMENT 'i1 comment',INDEX i2(c2)
) COMMENT='';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
let $ENGINE=`select variable_value from information_schema.global_variables where variable_name='STORAGE_ENGINE'`;
--replace_result $ENGINE ENGINE " PAGE_CHECKSUM=0" "" " PAGE_CHECKSUM=1" ""
SHOW CREATE TABLE t1;
# comment overflow(error)
DROP TABLE t1;
set sql_mode='TRADITIONAL';
--error ER_TOO_LONG_FIELD_COMMENT
create table t1 (c1 VARCHAR(10) NOT NULL COMMENT '', c2 INTEGER COMMENT '',c3 INTEGER COMMENT '012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789', c4 INTEGER, c5 INTEGER, c6 INTEGER, c7 INTEGER, INDEX i1 (c1) COMMENT 'i1 comment',INDEX i2(c2)
) COMMENT='';
SELECT table_comment,char_length(table_comment) FROM information_schema.tables WHERE table_name='t1';
SELECT column_comment,char_length(column_comment) FROM information_schema.columns WHERE table_name='t1';
SELECT comment,index_comment,char_length(index_comment) FROM information_schema.statistics WHERE table_name='t1';
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