MariaDB文档说自版本10.0.5(https://mariadb.com/kb/en/mariadb/documentation/optimization-and-tuning/optimization-and-indexes/full-text-indexes/fulltext-index-overview/)支持InnoDB的FULLTEXT索引
我最近安装了MariaDB 10.0.13并尝试将MyISAM表转换为InnoDB,如下所示:
MariaDB [(test)]> ALTER TABLE field_values ENGINE=InnoDB;
但遇到了这个错误:
ERROR 1214 (HY000): The used table type doesn't support FULLTEXT indexes
这是我的表的SHOW INDEXES
查询:
MariaDB [(test)]> show indexes in field_values;
+--------------------------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+--------------------------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| field_values | 0 | PRIMARY | 1 | productid | A | NULL | NULL | NULL | | BTREE | | |
| field_values | 0 | PRIMARY | 2 | fieldid | A | 0 | NULL | NULL | | BTREE | | |
| field_values | 1 | value | 1 | value | NULL | NULL | NULL | NULL | | FULLTEXT | | |
+--------------------------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
3 rows in set (0.00 sec)
MariaDB文档说明了只能为CHAR,VARCHAR或TEXT列创建的索引。所以我的桌子是DESCRIBE TABLE
:
MariaDB [(test)]> describe field_values ;
+-----------+-----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------+-----------+------+-----+---------+-------+
| productid | int(11) | NO | PRI | 0 | |
| fieldid | int(11) | NO | PRI | 0 | |
| value | char(255) | NO | MUL | | |
+-----------+-----------+------+-----+---------+-------+
3 rows in set (0.00 sec)
支持相关字段(value
),类型为CHAR
。
最后,这是我的MariaDB版本:
mysql Ver 15.1 Distrib 10.0.13-MariaDB, for Linux (x86_64) using readline 5.1
因此,至少根据MariaDB文档,应该支持此操作,但我发现错误。我是否必须在MariaDB 10.0.13中启用FULLTEXT索引?
答案 0 :(得分:4)
因此,在将MariaDB升级到10.0.14之后,我手动添加了全文索引,这完全正常。也许从MyIsam索引到XtraDB / InnoDB索引存在转换错误。
但应该做得好的是:
您可以在MariaDB中添加全文索引,如下所示:
ALTER TABLE your_table ADD FULLTEXT INDEX `ft_column_name` (column_name);
之后,您应该能够按预期使用您的查询。