Rill’s Metrics SQL lets you define business metrics once and query them using plain SQL across dashboards, notebooks, and AI agents. It compiles metric views into optimized OLAP queries, handling grouping, filters, time functions, and security automatically.

• Define a metric once in a YAML-backed metrics view and query it as plain SQL from dashboards, notebooks, and AI agents alike, instead of redefining it in dbt, Looker, Python, etc.
• A parser/compiler/executor pipeline rewrites simple queries like "SELECT country, revenue FROM revenue_metrics" into full OLAP SQL with correct GROUP BY, joins, and filters automatically.
• Security (row-level and column permissions) and SQL-injection-safe parameter binding are enforced consistently at the executor stage for every consumer.
• Works across multiple backends (ClickHouse, Snowflake, DuckDB, Druid) and can leverage existing database optimizations like materialized views and indexes for performance.

Since the inception of SQL in 1974, there has been a recurring dream to replace data analytics developers with tools that simplify the querying process. Each decade has seen innovations that aim to democratize data access, yet the complex intellectual work of understanding business needs and making informed decisions remains essential. Advances like AI can enhance efficiency but do not eliminate the crucial human expertise required in data analytics.

• SQL was designed in 1974 by IBM's Chamberlin and Boyce specifically to let non-programmers query data in plain English, yet this self-service dream has resurfaced every decade (OLAP in the 80s, semantic layers now) without ever eliminating the need for developers.
• AI can now generate SQL and build analytical models faster than ever, but it automates only the mechanical coding, not the judgment calls about which metrics or definitions actually matter.
• The real bottleneck was never syntax or tooling but the intellectual work of understanding business context — a gap AI accelerates around but doesn't close.