如何在天蓝色搜索中基于字段进行搜索? [英] How to search based on field in azure search?

问题描述

我正在使用azure搜索，并且我有一个带有以下代码的控制台应用程序，效果很好.

i am using a azure search, and i have a console app with the code as below, which is working fine.

        DocumentSearchResult<Hotel> results;
        Console.WriteLine("Search started\n"); 
        results = indexClient.Documents.Search<Hotel>("smart", new SearchParameters { Top=5 });
        WriteDocuments(results);

目前，它正在搜索带有"smart"一词的文本.这很简单，我需要的是表中有几个字段，我想根据字段进行搜索.

currently its searching a text with word "smart". this is straight forword, what i need is i have several fields in the table, i want to search based on the feild .

例如，让我有两个字段 1)标题 2)SoldDate

for example let i have two fields 1)Title 2)SoldDate

我必须编写代码来查找标题为"john"且销售日期为<当前日期.

I have to write code for finding items which has title 'john' and which has a sold date < current date.

我应该怎么做才能做到这一点?

what should i do to achieve this?

推荐答案

您可以通过搜索和过滤器实现所需的目标:

You can achieve what you want with search and a filter:

// Approach #1
string currentDate = DateTime.UtcNow.ToString("O");
var parameters = new SearchParameters()
{
    Filter = "soldDate lt " + currentDate,
    Top = 5
}

results = indexClient.Documents.Search<Hotel>("john", parameters);

这将仅将文档过滤为在currentDate之前带有soldDate的那些文档，然后搜索过滤的文档，以便如果任何可搜索字段包含"john"的文档都匹配.您可以像这样将范围缩小到title字段:

This will filter the documents to only those with a soldDate before currentDate, and then searches the filtered documents such that documents match if any of the searchable fields contain "john". You can narrow this down to just the title field like this:

// Approach #2
string currentDate = DateTime.UtcNow.ToString("O");
var parameters = new SearchParameters()
{
    Filter = "soldDate lt " + currentDate,
    SearchFields = new[] { "title" },
    Top = 5
}

results = indexClient.Documents.Search<Hotel>("john", parameters);

或者像这样:

// Approach #3
string currentDate = DateTime.UtcNow.ToString("O");
var parameters = new SearchParameters()
{
    Filter = "soldDate lt " + currentDate,
    QueryType = QueryType.Full,
    Top = 5
}

results = indexClient.Documents.Search<Hotel>("title:john", parameters);

使用哪种方式取决于您是希望将所有搜索词限制为一组特定的字段(方法2)，还是要使特定术语匹配特定的字段(方法3).

Which way you use depends on whether you want all search terms to be limited to a specific set of fields (Approach #2), or if you want specific terms to match specific fields (Approach #3).

SearchParameters的参考位于 docs.microsoft .com .

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