Is it true that SQL Runner allows writing and execution of SQL queries against a LookML model?

The assertion that SQL Runner allows writing and execution of SQL queries against a LookML model is accurate. SQL Runner is a feature in Looker that enables users to run raw SQL queries directly against the database without the need to rely exclusively on LookML model definitions. This functionality is particularly beneficial for users who want to test queries or analyze data without navigating through the LookML structures.

By using SQL Runner, users can leverage their SQL skills to access the underlying data directly, facilitating quick data exploration and analysis. Moreover, it allows for immediate feedback on the queries, which is essential for debugging or validating data logic.

The existence of this feature underlines the flexibility that Looker offers, particularly in scenarios requiring a more hands-on approach to data querying beyond structured LookML explorations.