Enriching Snowplow Events in Real Time with SQL Query Enrichment and MySQL

Snowplow's SQL Query Enrichment enables real-time enhancement of event data by querying relational databases like MySQL as events pass through the pipeline, allowing the attachment of additional attributes without increasing tracking payloads or delaying enrichment to batch processes. This tutorial demonstrates how to enhance form submission events with user details from an internal CRM using SQL Query Enrichment, facilitating the integration of enriched user data into downstream systems such as data warehouses or customer engagement tools. The process involves creating a MySQL lookup table, capturing email inputs with Snowplow events, defining a schema for enriched data, configuring the SQL Query Enrichment to query the database and attach results, and finally testing and inspecting the enriched events. By employing SQL Query Enrichment, users can perform real-time lookups, joining event data with relational sources for purposes such as user identification or campaign mapping, while maintaining lightweight tracking and flexible enrichment logic. This approach offers a powerful and flexible solution for integrating existing databases into Snowplow's enrichment process, enhancing the ability to respond to business logic in real time without compromising event fidelity or schema governance.