mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 21:42:35 +01:00
6116d0176b
"alter table from MyISAM to MERGE lost data without errors and warnings"
Add new handlerton flag which prevent user from altering table storage
engine to storage engines which would lose data. Both 'blackhole' and
'merge' are marked with the new flag.
Tests included.
mysql-test/r/blackhole.result:
test for bug#10952
mysql-test/r/merge.result:
test for bug#10952
mysql-test/t/blackhole.test:
test for bug#10952
mysql-test/t/merge.test:
test for bug#10952
sql/ha_blackhole.cc:
Bug#10952
shouldn't be able to alter a table into a blackhole
sql/ha_myisammrg.cc:
Bug#10952
shouldn't be able to alter a table into a merge
sql/handler.h:
Bug#10952
new handlerton flag
sql/sql_table.cc:
Bug#10952
If alter is changing engine, check if new engine allows creating table
via ALTER statement.
133 lines
5.3 KiB
Text
133 lines
5.3 KiB
Text
drop table if exists t1,t2;
|
|
CREATE TABLE t1 (
|
|
Period smallint(4) unsigned zerofill DEFAULT '0000' NOT NULL,
|
|
Varor_period smallint(4) unsigned DEFAULT '0' NOT NULL
|
|
) ENGINE=blackhole;
|
|
INSERT INTO t1 VALUES (9410,9412);
|
|
select period from t1;
|
|
period
|
|
select * from t1;
|
|
Period Varor_period
|
|
select t1.* from t1;
|
|
Period Varor_period
|
|
CREATE TABLE t2 (
|
|
auto int NOT NULL auto_increment,
|
|
fld1 int(6) unsigned zerofill DEFAULT '000000' NOT NULL,
|
|
companynr tinyint(2) unsigned zerofill DEFAULT '00' NOT NULL,
|
|
fld3 char(30) DEFAULT '' NOT NULL,
|
|
fld4 char(35) DEFAULT '' NOT NULL,
|
|
fld5 char(35) DEFAULT '' NOT NULL,
|
|
fld6 char(4) DEFAULT '' NOT NULL,
|
|
primary key (auto)
|
|
) ENGINE=blackhole;
|
|
INSERT INTO t2 VALUES (1192,068305,00,'Colombo','hardware','colicky','');
|
|
INSERT INTO t2 VALUES (1193,000000,00,'nondecreasing','implant','thrillingly','');
|
|
select t2.fld3 from t2 where companynr = 58 and fld3 like "%imaginable%";
|
|
fld3
|
|
select fld3 from t2 where fld3 like "%cultivation" ;
|
|
fld3
|
|
select t2.fld3,companynr from t2 where companynr = 57+1 order by fld3;
|
|
fld3 companynr
|
|
select fld3,companynr from t2 where companynr = 58 order by fld3;
|
|
fld3 companynr
|
|
select fld3 from t2 order by fld3 desc limit 10;
|
|
fld3
|
|
select fld3 from t2 order by fld3 desc limit 5;
|
|
fld3
|
|
select fld3 from t2 order by fld3 desc limit 5,5;
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 = 'honeysuckle';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 LIKE 'honeysuckl_';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 LIKE 'hon_ysuckl_';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 LIKE 'honeysuckle%';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 LIKE 'h%le';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 LIKE 'honeysuckle_';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 LIKE 'don_t_find_me_please%';
|
|
fld3
|
|
select t2.fld3 from t2 where fld3 >= 'honeysuckle' and fld3 <= 'honoring' order by fld3;
|
|
fld3
|
|
select fld1,fld3 from t2 where fld3="Colombo" or fld3 = "nondecreasing" order by fld3;
|
|
fld1 fld3
|
|
DROP TABLE t1;
|
|
CREATE TABLE t1 (a VARCHAR(200), b TEXT, FULLTEXT (a,b));
|
|
INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),
|
|
('Full-text indexes', 'are called collections'),
|
|
('Only MyISAM tables','support collections'),
|
|
('Function MATCH ... AGAINST()','is used to do a search'),
|
|
('Full-text search in MySQL', 'implements vector space model');
|
|
SHOW INDEX FROM t1;
|
|
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
|
t1 1 a 1 a NULL NULL NULL NULL YES FULLTEXT
|
|
t1 1 a 2 b NULL NULL NULL NULL YES FULLTEXT
|
|
select * from t1 where MATCH(a,b) AGAINST ("collections");
|
|
a b
|
|
Only MyISAM tables support collections
|
|
Full-text indexes are called collections
|
|
explain extended select * from t1 where MATCH(a,b) AGAINST ("collections");
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 fulltext a a 0 1 Using where
|
|
Warnings:
|
|
Note 1003 select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'collections'))
|
|
select * from t1 where MATCH(a,b) AGAINST ("indexes");
|
|
a b
|
|
Full-text indexes are called collections
|
|
select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
|
|
a b
|
|
Full-text indexes are called collections
|
|
Only MyISAM tables support collections
|
|
select * from t1 where MATCH(a,b) AGAINST ("only");
|
|
a b
|
|
reset master;
|
|
drop table t1,t2;
|
|
create table t1 (a int) engine=blackhole;
|
|
delete from t1 where a=10;
|
|
update t1 set a=11 where a=15;
|
|
insert into t1 values(1);
|
|
insert ignore into t1 values(1);
|
|
replace into t1 values(100);
|
|
create table t2 (a varchar(200)) engine=blackhole;
|
|
load data infile '../std_data_ln/words.dat' into table t2;
|
|
alter table t1 add b int;
|
|
alter table t1 drop b;
|
|
create table t3 like t1;
|
|
insert into t1 select * from t3;
|
|
replace into t1 select * from t3;
|
|
select * from t1;
|
|
a
|
|
select * from t2;
|
|
a
|
|
select * from t3;
|
|
a
|
|
show binlog events;
|
|
Log_name Pos Event_type Server_id End_log_pos Info
|
|
master-bin.000001 # Format_desc 1 # Server ver: VERSION, Binlog ver: 4
|
|
master-bin.000001 # Query 1 # use `test`; drop table t1,t2
|
|
master-bin.000001 # Query 1 # use `test`; create table t1 (a int) engine=blackhole
|
|
master-bin.000001 # Query 1 # use `test`; delete from t1 where a=10
|
|
master-bin.000001 # Query 1 # use `test`; update t1 set a=11 where a=15
|
|
master-bin.000001 # Query 1 # use `test`; insert into t1 values(1)
|
|
master-bin.000001 # Query 1 # use `test`; insert ignore into t1 values(1)
|
|
master-bin.000001 # Query 1 # use `test`; replace into t1 values(100)
|
|
master-bin.000001 # Query 1 # use `test`; create table t2 (a varchar(200)) engine=blackhole
|
|
master-bin.000001 # Begin_load_query 1 # ;file_id=1;block_len=581
|
|
master-bin.000001 # Execute_load_query 1 # use `test`; load data infile '../std_data_ln/words.dat' into table t2 ;file_id=1
|
|
master-bin.000001 # Query 1 # use `test`; alter table t1 add b int
|
|
master-bin.000001 # Query 1 # use `test`; alter table t1 drop b
|
|
master-bin.000001 # Query 1 # use `test`; create table t3 like t1
|
|
master-bin.000001 # Query 1 # use `test`; insert into t1 select * from t3
|
|
master-bin.000001 # Query 1 # use `test`; replace into t1 select * from t3
|
|
drop table t1,t2,t3;
|
|
drop table if exists t1;
|
|
Warnings:
|
|
Note 1051 Unknown table 't1'
|
|
create table t1 (c char(20)) engine=MyISAM;
|
|
insert into t1 values ("Monty"),("WAX"),("Walrus");
|
|
alter table t1 engine=blackhole;
|
|
ERROR HY000: Table storage engine for 't1' doesn't have this option
|
|
drop table t1;
|