query-engine/examples/scripts/README.md

Example Scripts

These scripts can be executed with:

make script SCRIPT=examples/scripts/ancestor.ech
cargo run -- script examples/scripts/ancestor.ech

Available examples:

• ancestor.ech: transitive closure over Parent/2
• employee_departments.ech: existential rule that creates labeled nulls
• negation.ech: stratified negation-as-failure with NOT in rule bodies
• same_team.ech: conjunctive query with a self-join
• skolem_chase.ech: Skolem chase with deterministic labeled nulls
• sql_aggregate.ech: GROUP BY with COUNT, SUM, MIN, MAX, and AVG
• sql_basic.ech: named-column filtering in the SQL frontend
• sql_filter_ops.ech: inequality, OR, LIMIT, and integer literals
• sql_join.ech: multi-table SQL join over predicate-backed tables
• sql_self_join.ech: self-join with SQL table aliases
• sql_order_by.ech: ordered SQL output with ORDER BY