Numeric range search Leave feedback

Numeric range search or numerical search allows you to search documents for integer numbers in the range from 0 to 9223372036854775807 (Int64.MaxValue). Please note that a number in the text must not be separated by spaces; otherwise, it is treated as several numbers. A search query of this type is specified as follows:

number ~~ number

The example below demonstrates the numeric range search in text and object forms.

C#

string indexFolder = @"c:\MyIndex\";
string documentsFolder = @"c:\MyDocuments\";
 
// Creating an index in the specified folder
Index index = new Index(indexFolder);
 
// Indexing documents from the specified folder
index.Add(documentsFolder);
 
// Search with text query
SearchResult result1 = index.Search("500 ~~ 600");
 
// Search with object query
SearchQuery query2 = SearchQuery.CreateNumericRangeQuery(500, 600);
SearchResult result2 = index.Search(query2);

Since version 26.10, numeric range search uses as many threads as there are processor cores by default. Therefore, the order of the found numbers in the search result may differ from run to run. To get the same order every time, set the SearchThreads index setting to NumberOfThreads.One.

You may easily run the code from documentation articles and see the features in action in our GitHub examples:

• GroupDocs.Search for .NET examples

• GroupDocs.Search for Java examples

Along with full featured .NET library we provide simple, but powerful free Apps.

You are welcome to search over your PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX and more with our free online Free Online Document Search App.