RuleContext and compiler facts

• ctx.sql: authored and expanded SQL
• ctx.graph: compiler-resolved dependencies and dependents
• ctx.columns: declared and inferred output columns
• ctx.contracts: enforcement and grain facts
• ctx.tests and ctx.audits: checks associated with a model
• ctx.declarations: public and model-scoped enums and constants
• ctx.project: compiled resources and deterministic project-tree observations

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Authored and expanded SQL

sql = ctx.sql.for_model(model)

authored_text = sql.authored.source
expanded_text = sql.expanded.source

​

Common SQL structures

for cte in sql.expanded.ctes():
    ...

for star in sql.authored.star_projections():
    ...

​

Lazy Polyglot access

ast = sql.expanded.polyglot_ast()
for node in ast.walk():
    ...

​

Project structure

parts = ctx.project.tree.relative_parts(path=model.path, under="models")
models = ctx.project.tree.resources_under("models/orders")
config = ctx.project.tree.read_text("rules/requirements.yaml")

​

Choose the subject deliberately