N1QL is an advanced query language designed for Couchbase Server that extends beyond traditional SQL by supporting attributes with multiple, nested values. This text explores how N1QL can be utilized in e-commerce applications, specifically for querying product categories, retrieving customer email addresses, and managing shopping cart transactions. Through examples, it demonstrates how to list products by category, concatenate customer names, prepare purchase orders, and calculate monthly sales revenue. The document highlights N1QL's functionality in handling JSON documents for user profiles and encourages readers to explore more about the language through additional resources and webinars.