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4a1b497899
A better fix would be to have a map of tables that are not used at all, and to annul just fledls in that TABLE.
203 lines
7.3 KiB
Text
203 lines
7.3 KiB
Text
drop table if exists t1,t2,t3;
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CREATE TABLE t1 (a VARCHAR(200), b TEXT, FULLTEXT (a,b));
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INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),
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('Full-text indexes', 'are called collections'),
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('Only MyISAM tables','support collections'),
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('Function MATCH ... AGAINST()','is used to do a search'),
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('Full-text search in MySQL', 'implements vector space model');
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select * from t1 where MATCH(a,b) AGAINST ("collections");
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a b
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Only MyISAM tables support collections
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Full-text indexes are called collections
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select * from t1 where MATCH(a,b) AGAINST ("indexes");
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a b
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Full-text indexes are called collections
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select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
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a b
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Full-text indexes are called collections
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Only MyISAM tables support collections
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select * from t1 where MATCH(a,b) AGAINST ("collections") UNION ALL select * from t1 where MATCH(a,b) AGAINST ("indexes");
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a b
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Only MyISAM tables support collections
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Full-text indexes are called collections
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Full-text indexes are called collections
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select * from t1 where MATCH(a,b) AGAINST("support -collections" IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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select * from t1 where MATCH(a,b) AGAINST("support collections" IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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Full-text indexes are called collections
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Only MyISAM tables support collections
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select * from t1 where MATCH(a,b) AGAINST("support +collections" IN BOOLEAN MODE);
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a b
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Full-text indexes are called collections
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Only MyISAM tables support collections
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select * from t1 where MATCH(a,b) AGAINST("sear*" IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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Function MATCH ... AGAINST() is used to do a search
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Full-text search in MySQL implements vector space model
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select * from t1 where MATCH(a,b) AGAINST("+support +collections" IN BOOLEAN MODE);
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a b
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Only MyISAM tables support collections
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select * from t1 where MATCH(a,b) AGAINST("+search" IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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Function MATCH ... AGAINST() is used to do a search
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Full-text search in MySQL implements vector space model
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select * from t1 where MATCH(a,b) AGAINST("+search +(support vector)" IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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Full-text search in MySQL implements vector space model
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select * from t1 where MATCH(a,b) AGAINST("+search -(support vector)" IN BOOLEAN MODE);
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a b
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Function MATCH ... AGAINST() is used to do a search
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select *, MATCH(a,b) AGAINST("support collections" IN BOOLEAN MODE) as x from t1;
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a b x
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MySQL has now support for full-text search 1
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Full-text indexes are called collections 1
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Only MyISAM tables support collections 2
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Function MATCH ... AGAINST() is used to do a search 0
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Full-text search in MySQL implements vector space model 0
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select *, MATCH(a,b) AGAINST("collections support" IN BOOLEAN MODE) as x from t1;
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a b x
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MySQL has now support for full-text search 1
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Full-text indexes are called collections 1
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Only MyISAM tables support collections 2
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Function MATCH ... AGAINST() is used to do a search 0
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Full-text search in MySQL implements vector space model 0
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select * from t1 where MATCH a,b AGAINST ("+call* +coll*" IN BOOLEAN MODE);
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a b
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Full-text indexes are called collections
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select * from t1 where MATCH a,b AGAINST ('"Now sUPPort"' IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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select * from t1 where MATCH a,b AGAINST ('"text search" "now support"' IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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Full-text search in MySQL implements vector space model
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select * from t1 where MATCH a,b AGAINST ('"text search" -"now support"' IN BOOLEAN MODE);
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a b
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Full-text search in MySQL implements vector space model
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select * from t1 where MATCH a,b AGAINST ('"text search" +"now support"' IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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select * from t1 where MATCH a AGAINST ("search" IN BOOLEAN MODE);
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a b
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Full-text search in MySQL implements vector space model
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select * from t1 where MATCH b AGAINST ("sear*" IN BOOLEAN MODE);
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a b
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MySQL has now support for full-text search
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Function MATCH ... AGAINST() is used to do a search
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delete from t1 where a like "MySQL%";
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update t1 set a='some test foobar' where MATCH a,b AGAINST ('model');
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delete from t1 where MATCH(a,b) AGAINST ("indexes");
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select * from t1;
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a b
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Only MyISAM tables support collections
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Function MATCH ... AGAINST() is used to do a search
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some test foobar implements vector space model
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drop table t1;
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CREATE TABLE t1 (
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id int(11),
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ticket int(11),
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KEY ti (id),
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KEY tit (ticket)
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);
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INSERT INTO t1 VALUES (2,3),(1,2);
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CREATE TABLE t2 (
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ticket int(11),
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inhalt text,
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KEY tig (ticket),
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fulltext index tix (inhalt)
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);
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INSERT INTO t2 VALUES (1,'foo'),(2,'bar'),(3,'foobar');
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select t1.id FROM t2 as ttxt,t1,t1 as ticket2
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WHERE ticket2.id = ttxt.ticket AND t1.id = ticket2.ticket and
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match(ttxt.inhalt) against ('foobar');
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id
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select t1.id FROM t2 as ttxt,t1 INNER JOIN t1 as ticket2 ON
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ticket2.id = ttxt.ticket
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WHERE t1.id = ticket2.ticket and match(ttxt.inhalt) against ('foobar');
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id
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INSERT INTO t1 VALUES (3,3);
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select t1.id FROM t2 as ttxt,t1
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INNER JOIN t1 as ticket2 ON ticket2.id = ttxt.ticket
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WHERE t1.id = ticket2.ticket and
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match(ttxt.inhalt) against ('foobar');
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id
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3
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show keys from t2;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t2 1 tig 1 ticket A NULL NULL NULL YES BTREE
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t2 1 tix 1 inhalt A NULL 1 NULL YES FULLTEXT
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`ticket` int(11) default NULL,
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`inhalt` text,
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KEY `tig` (`ticket`),
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FULLTEXT KEY `tix` (`inhalt`)
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) TYPE=MyISAM
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select * from t2 where MATCH inhalt AGAINST (NULL);
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ticket inhalt
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select * from t2 where MATCH inhalt AGAINST ('foobar');
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ticket inhalt
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3 foobar
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select * from t2 having MATCH inhalt AGAINST ('foobar');
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ticket inhalt
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3 foobar
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CREATE TABLE t3 (
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ticket int(11),
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inhalt text,
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KEY tig (ticket),
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fulltext index tix (inhalt)
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);
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select * from t2 where MATCH inhalt AGAINST (t2.inhalt);
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Wrong arguments to AGAINST
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select * from t2 where MATCH ticket AGAINST ('foobar');
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Can't find FULLTEXT index matching the column list
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select * from t2,t3 where MATCH (t2.inhalt,t3.inhalt) AGAINST ('foobar');
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Wrong arguments to MATCH
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drop table t1,t2,t3;
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CREATE TABLE t1 (
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id int(11) auto_increment,
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title varchar(100) default '',
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PRIMARY KEY (id),
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KEY ind5 (title),
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FULLTEXT KEY FT1 (title)
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) TYPE=MyISAM;
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insert into t1 (title) values ('this is a test');
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select * from t1 where match title against ('test' in boolean mode);
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id title
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1 this is a test
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update t1 set title='this is A test' where id=1;
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check table t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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update t1 set title='this test once revealed a bug' where id=1;
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select * from t1;
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id title
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1 this test once revealed a bug
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update t1 set title=NULL where id=1;
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drop table t1;
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CREATE TABLE t1 (a int(11), b text, FULLTEXT KEY (b)) TYPE=MyISAM;
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insert into t1 values (1,"I wonder why the fulltext index doesnt work?");
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SELECT * from t1 where MATCH (b) AGAINST ('apples');
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a b
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insert into t1 values (2,"fullaaa fullzzz");
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select * from t1 where match b against ('full*' in boolean mode);
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a b
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2 fullaaa fullzzz
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1 I wonder why the fulltext index doesnt work?
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drop table t1;
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CREATE TABLE t1 ( id int(11) NOT NULL auto_increment primary key, mytext text NOT NULL, FULLTEXT KEY mytext (mytext)) TYPE=MyISAM;
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INSERT INTO t1 VALUES (1,'my small mouse'),(2,'la-la-la'),(3,'It is so funny'),(4,'MySQL Tutorial');
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select 8 from t1;
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8
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8
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8
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8
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8
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drop table t1;
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