[英]Search special characters with pg_search
Im using 我正在使用
pg_search
pg_search
And trying to search in the title for a special character. 并尝试在标题中搜索特殊字符。
For example, I have two rows with this information: 例如,我有两行信息:
id title
1 GT40
2 #GT40
So when I search "#GT40", the result with pg_search will be 1 and 2. But I want to search exaclty word, so the result will be only 2. 所以当我搜索“#GT40”时,pg_search的结果将是1和2.但我想搜索exaclty字,所以结果只有2。
Thanks! 谢谢!
I tried to write a comment but my reputation is not high enough yet. 我试着写评论,但我的声誉还不够高。 But maybe what you are trying to do is not possible with
pg_search
? 但也许
pg_search
无法实现你想做的pg_search
?
pg_search is based on PostgreSQL's Full Text Search. pg_search基于PostgreSQL的全文搜索。 Testing in the console shows that "GT40" and "#GT40" are indexed to the same lexeme (which means your searches can't tell them apart):
在控制台中进行测试表明“GT40”和“#GT40”被索引到相同的词汇(这意味着您的搜索无法区分它们):
"GT40" : “GT40” :
=# SELECT to_tsvector('english', 'GT40');
to_tsvector
-------------
'gt40':1
(1 row)
"#GT40" : “#GT40” :
=# SELECT to_tsvector('english', '#GT40');
to_tsvector
-------------
'gt40':1
(1 row)
Here is some reference info that might be helpful: 以下是一些可能有用的参考信息:
Tutorial: http://shisaa.jp/postset/postgresql-full-text-search-part-1.html 教程: http : //shisaa.jp/postset/postgresql-full-text-search-part-1.html
PostgreSQL's Full Text Search Reference: http://www.postgresql.org/docs/9.1/static/textsearch.html PostgreSQL的全文搜索参考: http : //www.postgresql.org/docs/9.1/static/textsearch.html
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