Searching using indexes in RavenDB lets users (and applications) run full-text queries against character-based data. Each index indexes one or more fields from a document and can use a specific language to perform linguistic searches against text data by operating on words and phrases based on rules of a particular language such as English or Japanese.
Exact matching queries cause RavenDB to make an exact (and case sensitive) match to a field value. Full-text queries can include simple words and phrases or multiple forms of words or phrases. A full-text query (and exact matching query) returns any documents that contain at least one match (also known as a hit). A match occurs when a target document contains any of the terms specified in the full-text query, and meets any other search conditions.
Usually to create a simple condition or for simple text field search a Where
closure is enough to create condition. By default, RavenDB uses case insensitive match...