Postresql是否能够进行全文搜索，基于'half'这个单词？ 例如我试图寻找tree，但我告诉postgres搜索tr我无法找到这样一个能够做到这一点的解决方案。
目前我使用
select * from test，to_tsquery（'tree'）as q where vectors @@ q;但我想这样做：
select * from test，to_tsquery（'tr％'）as q where vectors @@ q;解决方案
听起来像只是想通配符匹配。 >
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如前所述，一个选项是 trigrams 。我的（非常）有限的经验是，它在我喜欢的大型桌子上速度太慢（有些情况比LIKE慢）。正如我所说，我对trigrams的使用经验有限，所以我可能会错误地使用它。
第二个选项是你可以使用 wildspeed 模块： http：// www。 sai.msu.su/~megera/wiki/wildspeed （您将不得不构建和安装此tho）。
第二个选项也适用于后缀/中间匹配。这可能是也可能不会超过你正在寻找的。
有几个警告（如索引的大小），请仔细阅读该页面。
Is postresql capable of doing a full text search, based on 'half' a word? For example I'm trying to seach for "tree", but I tell postgres to search for "tr".
I can't find such a solution that is capable of doing this.
Currently I'm using
select * from test, to_tsquery('tree') as q where vectors @@ q ;But I'd like to do something like this:
select * from test, to_tsquery('tr%') as q where vectors @@ q ;解决方案
Sounds like you simply want wildcard matching.
One option, as previously mentioned is trigrams. My (very) limited experience with it was that it was too slow on massive tables for my liking (some cases slower than a LIKE). As I said, my experience with trigrams is limited, so I might have just been using it wrong.
A second option you could use is the wildspeed module: www.sai.msu.su/~megera/wiki/wildspeed (you'll have to build & install this tho).
The 2nd option will work for suffix/middle matching as well. Which may or may not be more than you're looking for.
There are a couple of caveats (like size of the index), so read through that page thoroughly.
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