blackhole.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:5k
- 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/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 Orig_log_pos Info
- master-bin.000001 # Start 1 # Server ver: VERSION, Binlog ver: 3
- 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 # Create_file 1 # db=test;table=t2;file_id=1;block_len=581
- master-bin.000001 # Exec_load 1 # ;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;