Azure搜索和短划线 [英] Azure Search and Dashes
问题描述
我正在使用Azure搜索并尝试对文档执行搜索:
I am using Azure Search and trying to perform a search against documents:
似乎正在这样做:/indexes/blah/docs?api-version=2015-02-28&search=abc\-1003
返回与此相同的结果:/indexes/blah/docs?api-version=2015-02-28&search=abc-1003
returns the same results as this: /indexes/blah/docs?api-version=2015-02-28&search=abc-1003
由于转义了反斜杠，第一个返回的结果应该与第二个返回的结果不同吗?据我了解，反斜杠应该允许对整个字符串"abc-1003"进行精确搜索，而不是执行"not"运算符.
Shouldn't the first one return different results than the second due to the escaping backwards slash? From what I understand the backwards slash should allow for an exact search on the whole string of "abc-1003" instead of doing a "not" operator.
(此处提供更多信息: https://msdn.microsoft.com/en-us/library/azure/dn798920.aspx )
(more info here: https://msdn.microsoft.com/en-us/library/azure/dn798920.aspx)
我要使其正常工作的唯一方法是执行此操作(请注意双引号):/indexes/blah/docs?api-version=2015-02-28&search="abc-1003"
The only way I can get it to work is by doing this (note the double quotes): /indexes/blah/docs?api-version=2015-02-28&search="abc-1003"
我不想这样做，因为那将意味着让用户输入引号，而他们不知道该怎么做.
I would rather not do that because that would mean making the user enter in the quotes, which they will not know how to do.
我是否应该避免某些事情，或者它可能是Azure搜索的错误?
Am I expecting something I shouldn't or is it possibly a bug with Azure Search?
推荐答案
首先，没有空格开头的破折号的作用就像破折号，而不是取反运算符.
First, a dash not prefaced by a whitespace acts like a dash, not a negation operator.
按照MSDN文档中的简单查询语法
As per the MSDN docs for simple query syntax
- Only needs to be escaped if it's the first character after whitespace, not if it's in the middle of a term. For example, "wi-fi" is a single term
第二，除非您使用的是自定义分析器对于您的索引，破折号将被分析器对待，就像空白一样，并且会将abc-1003分解为两个记号abc和1003.
Second, unless you are using a custom analyzer for your index, the dash will be treated by the analyzer almost like white-space and will break abc-1003 into two tokens, abc and 1003.
然后，将其放在引号中"abc-1003"，将被视为对短语abc 1003的搜索，从而返回您期望的结果.
Then when you put it in quotes"abc-1003" it will be treated as a search for the phrase abc 1003, thus returning what you expect.
如果要精确匹配abc-1003，请考虑使用过滤器.它速度更快，可以匹配guid或带有破折号的文本
If you want to exact match on abc-1003 consider using a filter instead. It is faster and can matching things like guids or text with dashes
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