Question

我在tbl_query

上运行以下查询

select * from tbl_query q where match(q.query_desc,q.query_desc_details) against ('test1' WITH QUERY EXPANSION);

发出错误

16:46:22    select * from tbl_query q where match(q.query_desc,q.query_desc_details) against ('test1' WITH QUERY EXPANSION) LIMIT 0, 1000   Error Code: 1191. Can't find FULLTEXT index matching the column list    0.078 sec

我的表就像这样

 CREATE TABLE `tbl_query` (
  `query_id` int(11) NOT NULL AUTO_INCREMENT,
  `query_desc` text NOT NULL,
  `query_desc_details` text,
  PRIMARY KEY (`query_id`),
  KEY `QUERY_DESC` (`query_desc`(333)) USING BTREE,
  KEY `QUERY_DESC_DETAILS` (`query_desc_details`(333)) USING BTREE
) ENGINE=MyISAM AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;

在数据库中，全文字边界就像

ft_max_word_len=    84
ft_min_word_len=    4

我正在搜索两栏所以我的问题是如何为表创建全文索引？

Answer 1

您创建的2列的全文

ALTER TABLE tbl_query
ADD FULLTEXT INDEX `FullText` 
(`query_desc` ASC, 
 `query_desc_details` ASC);

Answer 2

ALTER TABLE `TableName`
    ADD FULLTEXT INDEX `IndexName` (`ColumnName`);

Answer 3

这会创建索引。这是你想要的吗？

ALTER TABLE table ADD FULLTEXT index_name(column1);

Answer 4

添加索引

ALTER TABLE table_name ADD FULLTEXT index_name(column1, column2);

获取搜索结果

SELECT * FROM table_name WHERE MATCH(column1, column2)
AGAINST('search string' IN NATURAL LANGUAGE MODE);

删除索引

ALTER TABLE table_name
DROP INDEX index_name;

如何在多列上创建FULLTEXT索引？

4 个答案: