You can search using regular expression patterns in the query string by wrapping the term, value, or both in forward slashes. Regular expressions queries only work on fields with a string value data type and do not work on integer fields. See Metadata Fields Definitions for a list of field descriptions and types.
Note
Regular expression patterns are case-sensitive.
You can use a regular expression query to search the NDR index for doc_values_type with any lowercase character A through Z that can be either 1, 2, or 3 characters by using the steps defined in the Entering Queries.
To search the NDR index for doc_values_type with any uppercase character A through Z that can be either 1, 2, 3, or 4 characters, enter the following query:
Escaping Special Characters
NDR supports escaping special characters that are part of the regular expression query syntax. The special characters are:
+ - && || ! ( ) { } [ ] ^ “ ~ * ? : \
To escape these characters, use the \ (backslash) before the character. For example, to search for (1+1):2 use the query: \(1\+1\)\:2.
Note
Use the \ symbol to escape special characters only in query strings using regular expressions.