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Session: Querying: How to Use Regex

To return only documents that match regular expression, use the regex method which enables RavenDB to perform server-side pattern matching queries.

The supplied regular expression must be .NET compatible.

Example

// loads all products, which name
// starts with 'N' or 'A'
List<Product> products = session.query(Product.class)
    .whereRegex("Name", "^[NA]")
    .toList();
from Products 
where regex(Name, '^[NA]')