## Metadata - Author: [[google.com|Google]] - Full Title:: Best Practice: LookML Dos and Don'ts - Category:: #🗞️Articles - URL:: https://cloud.google.com/looker/docs/best-practices/best-practices-lookml-dos-and-donts - Finished date:: [[2023-06-27]] ## Highlights > **Do**: Define the [`relationship`](https://cloud.google.com/looker/docs/reference/param-explore-join-relationship) parameter for all joins. > This will ensure that metrics aggregate properly within Looker ([View Highlight](https://read.readwise.io/read/01h3wq4j8pm2sksbagdm7k2qy2))