mariadb全文索引-工具盒子

# 前言 {#前言}

如同翻译的那样，Mroonga是一个适用于MySQL的存储引擎。它为所有MySQL用户提供了快速的全文搜索功能。

这里直接演示怎么在MariaDB上启用mroonga存储引擎

# 1) 加载mroonga插件 {#_1-加载mroonga插件}

MariaDB [(none)]>INSTALL SONAME 'ha_mroonga';
MariaDB [(none)]> CREATE FUNCTION last_insert_grn_id RETURNS INTEGER SONAME 'ha_mroonga.so';

# 2）建表测试一下 {#_2）建表测试一下}

MariaDB [(none)]>create database jerry;
MariaDB [(none)]>use jerry
MariaDB [jerry]> create table t1 (id int not null,name varchar(100)not null,notes text,fulltext index(notes))engine=mroonga;

# 3）胡乱插入一些数据 {#_3）胡乱插入一些数据}

MariaDB [jerry]> insert into t1 values(1,'擦擦擦','我也不会告诉你');
Query OK, 1 row affected (0.00 sec)
MariaDB [jerry]> insert into t1 values(2,'啦啦啦','我也不会告诉你');
Query OK, 1 row affected (0.01 sec)
MariaDB [jerry]> insert into t1 values(3,'dashaba','森马服饰');
Query OK, 1 row affected (0.00 sec)
MariaDB [jerry]> insert into t1 values(4,'victor','大森马投资有限公司');
Query OK, 1 row affected (0.00 sec)
MariaDB [jerry]> insert into t1 values(5,'kukumimilulu','森马跨境电商有限公司');
Query OK, 1 row affected (0.00 sec)
MariaDB [jerry]> insert into t1 values(6,'王思聪','王爸爸联合大森马跨境电商有限公司');
Query OK, 1 row affected (0.00 sec)

# 4）用如下命令查询 {#_4）用如下命令查询}

MariaDB [jerry]> select * from t1 where match(notes) against('大森马' in BOOLEAN MODE);
+----+-----------+--------------------------------------------------+
| id | name      | notes                                            |
+----+-----------+--------------------------------------------------+
|  4 | victor    | 大森马投资有限公司                               |
|  6 | 王思聪    | 王爸爸联合大森马跨境电商有限公司                 |
+----+-----------+--------------------------------------------------+
2 rows in set (0.00 sec)
5 ) 通过执行计划我们可以看到已经用到notes这个全文索引，并且只需要扫描一行
MariaDB [jerry]> explain select * from t1 where match(notes) against('大森马' in BOOLEAN MODE);
+------+-------------+-------+----------+---------------+-------+---------+------+------+-----------------------------------+
| id   | select_type | table | type     | possible_keys | key   | key_len | ref  | rows | Extra                             |
+------+-------------+-------+----------+---------------+-------+---------+------+------+-----------------------------------+
|    1 | SIMPLE      | t1    | fulltext | notes         | notes | 0       |      |    1 | Using where with pushed condition |
+------+-------------+-------+----------+---------------+-------+---------+------+------+-----------------------------------+
1 row in set (0.00 sec)