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MySQL 5.7 innodb全文索引

原文 http://www.cnblogs.com/mydbs/p/5999884.html 2016-10-26 12:32:59 0 评论

  由于模糊搜索的需求越来越多,所以在从库上创建全文索引来应付各种搜索需求。现在创建一个用户名的全文搜索,全表大小为1100W条记录左右。

1、表结构查询

mysql> desc ucenter_member;
+------------------+------------------+------+-----+------------+----------------+
| Field            | Type             | Null | Key | Default    | Extra          |
+------------------+------------------+------+-----+------------+----------------+
| id               | int(10) unsigned | NO   | PRI | NULL       | auto_increment |
| nickname         | char(20)         | YES  | MUL |            |                |
| devicetoken      | varchar(60)      | NO   | MUL |            |                |
| version          | char(10)         | YES  |     |            |                |
| app_type         | tinyint(1)       | YES  |     | 0          |                |
| password         | char(32)         | NO   |     | NULL       |                |
| salt             | char(4)          | NO   |     | NULL       |                |
| mobile           | varchar(13)      | YES  | MUL | NULL       |                |
| avatar           | int(11)          | NO   |     | 0          |                |
| sex              | tinyint(1)       | NO   |     | 0          |                |
| birthday         | date             | YES  |     | 0000-00-00 |                |
+------------------+------------------+------+-----+------------+----------------+
11 rows in set (0.00 sec)

必要的参数设置

mysql> show variables like 'ft_min_word_len';
+-----------------+-------+
| Variable_name   | Value |
+-----------------+-------+
| ft_min_word_len | 1     |
+-----------------+-------+
1 row in set (0.00 sec)

  

2、添加全文索引

mysql> alter table ucenter_member add fulltext index ix_ft_ucenter_member_nickname(nickname) with parser ngram;

  

3、添加过程(添加全文整个过程要很长的时间,并且这段时间里所有业务将不能执行)

主从复制将会停止
mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.1.200 Master_User: slave Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mybin.000750 Read_Master_Log_Pos: 746166232 Relay_Log_File: relay-bin.002247 Relay_Log_Pos: 17345090 Relay_Master_Log_File: mybin.000750 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: sys.%,mysql.%,information_schema.%,performance_schema.% Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 736231270 Relay_Log_Space: 27280306 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 1104 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: 5a00f33b-8551-11e5-9122-0016310207a0 Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Waiting for dependent transaction to commit Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: 5a00f33b-8551-11e5-9122-0016310207a0:1451340674-1451398198 Executed_Gtid_Set: 5a00f33b-8551-11e5-9122-0016310207a0:1-1451377326, 9905e5a2-815d-11f5-8244-00163f004aa2:1-84 Auto_Position: 1 Replicate_Rewrite_DB: Channel_Name: 1 row in set (0.00 sec)

查询进程

mysql> show processlist;
+----+-------------+-----------+--------+---------+------+---------------------------------------------+------------------------------------------------------------------------------------------------------+
| Id | User        | Host      | db     | Command | Time | State                                       | Info                                                                                                 |
+----+-------------+-----------+--------+---------+------+---------------------------------------------+------------------------------------------------------------------------------------------------------+
|  1 | system user |           | NULL   | Connect | 1673 | Waiting for master to send event            | NULL                                                                                                 |
|  2 | system user |           | NULL   | Connect | 1123 | Waiting for dependent transaction to commit | NULL                                                                                                 |
|  3 | system user |           | NULL   | Connect | 1123 | Waiting for table metadata lock             | NULL                                                                                                 |
|  4 | system user |           | NULL   | Connect | 1195 | Waiting for an event from Coordinator       | NULL                                                                                                 |
|  5 | system user |           | NULL   | Connect | 1673 | Waiting for an event from Coordinator       | NULL                                                                                                 |
|  6 | system user |           | NULL   | Connect | 1673 | Waiting for an event from Coordinator       | NULL                                                                                                 |
|  9 | root        | localhost | peiyin | Query   | 1123 | altering table                              | alter table ucenter_member add fulltext index ix_ft_ucenter_member_nickname(nickname) with parser ng |
| 14 | root        | localhost | NULL   | Query   |    0 | starting                                    | show processlist                                                                                     |
+----+-------------+-----------+--------+---------+------+---------------------------------------------+------------------------------------------------------------------------------------------------------+
8 rows in set (0.00 sec)
  

  

4、完成创建

mysql> alter table ucenter_member add fulltext index ix_ft_ucenter_member_nickname(nickname) with parser ngram;
Query OK, 0 rows affected, 1 warning (31 min 7.29 sec)
Records: 0  Duplicates: 0  Warnings: 1

5、查询索引

按布尔全文搜索模式查询

mysql> select version,nickname from ucenter_member where match(nickname) against('中国' in boolean mode) limit 10;
+---------+--------------------------------------------------+
| version | nickname                                         |
+---------+--------------------------------------------------+
| 4.63    | 我爱中国 立场中国                                |
|         | 中国联通一窍不通中国移动一动不动                 |
| 4.21    | 姜振光(中国·北科、中国·沪航)                   |
| 4.63    | 我是中国人,我爱中国                             |
| 4.40    | 中国人中国心                                     |
| 4.52    | 中国特警――中国青年财神爷                         |
| 4.52    | 完美中国,中国完美                               |
| 4.81    | 中国梦、梦中国                                   |
| 4.52    | 中国梦~我的梦                                   |
|         | A   中国梦                                       |
+---------+--------------------------------------------------+
10 rows in set (0.01 sec)

mysql> select version,nickname from ucenter_member where match(nickname) against('中国梦想' in boolean mode) limit 10;
Empty set (0.03 sec)

  

按自然语言搜索模式查询

mysql> select version,nickname from ucenter_member where match(nickname) against('中国' in natural language mode) limit 10;
+---------+--------------------------------------------------+
| version | nickname                                         |
+---------+--------------------------------------------------+
| 4.63    | 我爱中国 立场中国                                |
|         | 中国联通一窍不通中国移动一动不动                 |
| 4.21    | 姜振光(中国·北科、中国·沪航)                   |
| 4.63    | 我是中国人,我爱中国                             |
| 4.40    | 中国人中国心                                     |
| 4.52    | 中国特警――中国青年财神爷                         |
| 4.52    | 完美中国,中国完美                               |
| 4.81    | 中国梦、梦中国                                   |
| 4.52    | 中国梦~我的梦                                   |
|         | A   中国梦                                       |
+---------+--------------------------------------------------+
10 rows in set (0.01 sec)

mysql> select version,nickname from ucenter_member where match(nickname) against('中国梦想' in natural language mode) limit 10;
+------------+--------------------------------------------------+
| version    | nickname                                         |
+------------+--------------------------------------------------+
| 4.81       | 中国梦、梦中国                                   |
| 4.63       | 中国梦我的梦,我的梦想是行业顶尖                 |
| 4.52       | 中国梦~我的梦                                   |
|            | A   中国梦                                       |
|            | 中国梦                                           |
| 3.17       | 中国梦                                           |
| 3.171      | AST中国梦                                        |
| 3.20201505 | 中国梦  红楼梦                                   |
| 3.211      | 中国梦                                           |
| 4.63       | 中国梦                                           |
+------------+--------------------------------------------------+
10 rows in set (0.05 sec)

6、产生的文件

[root@mysql01 mydbs]# ls -alh FTS*
-rw-r----- 1 mysql mysql 104M Oct 26 11:47 FTS_0000000000000353_0000000000000710_INDEX_1.ibd
-rw-r----- 1 mysql mysql  17M Oct 26 11:47 FTS_0000000000000353_0000000000000710_INDEX_2.ibd
-rw-r----- 1 mysql mysql  14M Oct 26 11:47 FTS_0000000000000353_0000000000000710_INDEX_3.ibd
-rw-r----- 1 mysql mysql  40M Oct 26 11:47 FTS_0000000000000353_0000000000000710_INDEX_4.ibd
-rw-r----- 1 mysql mysql  44M Oct 26 11:48 FTS_0000000000000353_0000000000000710_INDEX_5.ibd
-rw-r----- 1 mysql mysql 212M Oct 26 11:47 FTS_0000000000000353_0000000000000710_INDEX_6.ibd
-rw-r----- 1 mysql mysql  96K Oct 26 11:43 FTS_0000000000000353_BEING_DELETED_CACHE.ibd
-rw-r----- 1 mysql mysql  96K Oct 26 11:42 FTS_0000000000000353_BEING_DELETED.ibd
-rw-r----- 1 mysql mysql  96K Oct 26 11:41 FTS_0000000000000353_CONFIG.ibd
-rw-r----- 1 mysql mysql  96K Oct 26 11:40 FTS_0000000000000353_DELETED_CACHE.ibd
-rw-r----- 1 mysql mysql  96K Oct 26 12:09 FTS_0000000000000353_DELETED.ibd

  

  

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