SET @optimize=@@GLOBAL.INNODB_OPTIMIZE_FULLTEXT_ONLY;
SET GLOBAL INNODB_OPTIMIZE_FULLTEXT_ONLY=1;
CREATE TABLE articles (
id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
title VARCHAR(200),
content TEXT
) ENGINE= InnoDB;
CREATE FULLTEXT INDEX idx ON articles (title, content);
INSERT INTO articles (title, content) VALUES
('MySQL Tutorial','DBMS stands for MySQL DataBase ...'),
('How To Use MySQL Well','After you went through a ...'),
('Optimizing MySQL','In this tutorial we will show ...'),
('1001 MySQL Tricks','How to use full-text search engine'),
('Go MySQL Tricks','How to use full text search engine');
SET @aux=@@GLOBAL.innodb_ft_aux_table;
SET GLOBAL innodb_ft_aux_table='test/articles';
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_CACHE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
1001	4	4	1	4	0
after	2	2	1	2	22
database	1	1	1	1	37
dbms	1	1	1	1	15
engine	4	5	2	4	46
engine	4	5	2	5	44
full	4	5	2	4	29
full	4	5	2	5	27
mysql	1	5	5	1	0
mysql	1	5	5	1	31
mysql	1	5	5	2	11
mysql	1	5	5	3	11
mysql	1	5	5	4	5
mysql	1	5	5	5	3
optimizing	3	3	1	3	0
search	4	5	2	4	39
search	4	5	2	5	37
show	3	3	1	3	42
stands	1	1	1	1	20
text	4	5	2	4	34
text	4	5	2	5	32
through	2	2	1	2	37
tricks	4	5	2	4	11
tricks	4	5	2	5	9
tutorial	1	3	2	1	6
tutorial	1	3	2	3	25
use	2	5	3	2	7
use	2	5	3	4	25
use	2	5	3	5	23
well	2	2	1	2	17
went	2	2	1	2	32
you	2	2	1	2	28
OPTIMIZE TABLE articles;
Table	Op	Msg_type	Msg_text
test.articles	optimize	status	OK
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_TABLE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
1001	4	4	1	4	0
after	2	2	1	2	22
database	1	1	1	1	37
dbms	1	1	1	1	15
engine	4	5	2	4	46
engine	4	5	2	5	44
full	4	5	2	4	29
full	4	5	2	5	27
mysql	1	5	5	1	0
mysql	1	5	5	1	31
mysql	1	5	5	2	11
mysql	1	5	5	3	11
mysql	1	5	5	4	5
mysql	1	5	5	5	3
optimizing	3	3	1	3	0
search	4	5	2	4	39
search	4	5	2	5	37
show	3	3	1	3	42
stands	1	1	1	1	20
text	4	5	2	4	34
text	4	5	2	5	32
through	2	2	1	2	37
tricks	4	5	2	4	11
tricks	4	5	2	5	9
tutorial	1	3	2	1	6
tutorial	1	3	2	3	25
use	2	5	3	2	7
use	2	5	3	4	25
use	2	5	3	5	23
well	2	2	1	2	17
went	2	2	1	2	32
you	2	2	1	2	28
SET @save_dbug=@@debug_dbug;
SET debug_dbug='+d,fts_instrument_result_cache_limit';
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_TABLE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
1001	4	4	1	4	0
after	2	2	1	2	22
database	1	1	1	1	37
dbms	1	1	1	1	15
engine	4	5	2	4	46
engine	4	5	2	5	44
full	4	5	2	4	29
full	4	5	2	5	27
mysql	1	5	5	1	0
mysql	1	5	5	1	31
mysql	1	5	5	2	11
mysql	1	5	5	3	11
mysql	1	5	5	4	5
mysql	1	5	5	5	3
optimizing	3	3	1	3	0
search	4	5	2	4	39
search	4	5	2	5	37
show	3	3	1	3	42
stands	1	1	1	1	20
text	4	5	2	4	34
text	4	5	2	5	32
through	2	2	1	2	37
tricks	4	5	2	4	11
tricks	4	5	2	5	9
tutorial	1	3	2	1	6
tutorial	1	3	2	3	25
use	2	5	3	2	7
use	2	5	3	4	25
use	2	5	3	5	23
well	2	2	1	2	17
went	2	2	1	2	32
you	2	2	1	2	28
SET debug_dbug=@save_dbug;
DROP TABLE articles;
SET GLOBAL innodb_ft_result_cache_limit=default;
CREATE TABLE articles (
id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
title VARCHAR(200),
content TEXT
) ENGINE= InnoDB;
CREATE FULLTEXT INDEX idx_t ON articles (title);
CREATE FULLTEXT INDEX idx_c ON articles (content);
INSERT INTO articles (title, content) VALUES
('MySQL Tutorial','DBMS stands for MySQL DataBase ...'),
('How To Use MySQL Well','After you went through a ...'),
('Optimizing MySQL','In this tutorial we will show ...'),
('1001 MySQL Tricks','How to use full-text search engine'),
('Go MySQL Tricks','How to use full text search engine');
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_CACHE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
SET GLOBAL innodb_ft_aux_table='test/articles';
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_CACHE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
1001	4	4	1	4	0
mysql	1	5	5	1	0
mysql	1	5	5	2	11
mysql	1	5	5	3	11
mysql	1	5	5	4	5
mysql	1	5	5	5	3
optimizing	3	3	1	3	0
tricks	4	5	2	4	11
tricks	4	5	2	5	9
tutorial	1	1	1	1	6
use	2	2	1	2	7
well	2	2	1	2	17
after	2	2	1	2	0
database	1	1	1	1	22
dbms	1	1	1	1	0
engine	4	5	2	4	28
engine	4	5	2	5	28
full	4	5	2	4	11
full	4	5	2	5	11
mysql	1	1	1	1	16
search	4	5	2	4	21
search	4	5	2	5	21
show	3	3	1	3	25
stands	1	1	1	1	5
text	4	5	2	4	16
text	4	5	2	5	16
through	2	2	1	2	15
tutorial	3	3	1	3	8
use	4	5	2	4	7
use	4	5	2	5	7
went	2	2	1	2	10
you	2	2	1	2	6
OPTIMIZE TABLE articles;
Table	Op	Msg_type	Msg_text
test.articles	optimize	status	OK
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_TABLE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
1001	4	4	1	4	0
mysql	1	5	5	1	0
mysql	1	5	5	2	11
mysql	1	5	5	3	11
mysql	1	5	5	4	5
mysql	1	5	5	5	3
optimizing	3	3	1	3	0
tricks	4	5	2	4	11
tricks	4	5	2	5	9
tutorial	1	1	1	1	6
use	2	2	1	2	7
well	2	2	1	2	17
after	2	2	1	2	0
database	1	1	1	1	22
dbms	1	1	1	1	0
engine	4	5	2	4	28
engine	4	5	2	5	28
full	4	5	2	4	11
full	4	5	2	5	11
mysql	1	1	1	1	16
search	4	5	2	4	21
search	4	5	2	5	21
show	3	3	1	3	25
stands	1	1	1	1	5
text	4	5	2	4	16
text	4	5	2	5	16
through	2	2	1	2	15
tutorial	3	3	1	3	8
use	4	5	2	4	7
use	4	5	2	5	7
went	2	2	1	2	10
you	2	2	1	2	6
DROP TABLE articles;
SET NAMES utf8;
CREATE TABLE articles (
id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
title VARCHAR(200)
) ENGINE=InnoDB DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE FULLTEXT INDEX idx ON articles (title);
INSERT INTO articles (title) VALUES
('相亲相爱'),('怜香惜爱'),('充满可爱'),('爱恨交织');
SET GLOBAL innodb_ft_aux_table="test/articles";
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_CACHE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
充满可爱	3	3	1	3	0
怜香惜爱	2	2	1	2	0
爱恨交织	4	4	1	4	0
相亲相爱	1	1	1	1	0
OPTIMIZE TABLE articles;
Table	Op	Msg_type	Msg_text
test.articles	optimize	status	OK
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_TABLE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
充满可爱	3	3	1	3	0
怜香惜爱	2	2	1	2	0
爱恨交织	4	4	1	4	0
相亲相爱	1	1	1	1	0
DROP TABLE articles;
CREATE TABLE articles (
id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
title VARCHAR(200)
) ENGINE=InnoDB DEFAULT CHARACTER SET gb2312 COLLATE gb2312_chinese_ci;
CREATE FULLTEXT INDEX idx ON articles (title);
INSERT INTO articles (title) VALUES
('相亲相爱'),('怜香惜爱'),('充满可爱'),('爱恨交织');
SET GLOBAL innodb_ft_aux_table="test/articles";
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_CACHE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
爱恨交织	4	4	1	4	0
充满可爱	3	3	1	3	0
怜香惜爱	2	2	1	2	0
相亲相爱	1	1	1	1	0
OPTIMIZE TABLE articles;
Table	Op	Msg_type	Msg_text
test.articles	optimize	status	OK
SELECT * FROM INFORMATION_SCHEMA.INNODB_FT_INDEX_TABLE;
WORD	FIRST_DOC_ID	LAST_DOC_ID	DOC_COUNT	DOC_ID	POSITION
怜香惜爱	2	2	1	2	0
充满可爱	3	3	1	3	0
相亲相爱	1	1	1	1	0
爱恨交织	4	4	1	4	0
DROP TABLE articles;
SET GLOBAL innodb_ft_aux_table=@aux;
SET GLOBAL INNODB_OPTIMIZE_FULLTEXT_ONLY=@optimize;