Convert SQL between dialects (Postgres, MySQL, BigQuery, Snowflake, ClickHouse, DuckDB, …) with duck_diff as the mechanical acceptance loop. Use when asked to migrate, port, translate, or rewrite SQL/views/dbt models to another database or dialect, or to…
Iteratively optimize a slow SQL query's performance while proving every rewrite returns identical results — duck_diff is the correctness gate, timing is the fitness function. Use when asked to speed up, tune, or refactor a query/view/model without changing…
Check whether two databases/tables are in sync using duck_diff — replication lag, CDC pipelines (ClickPipes/Debezium/Fivetran), ETL copies, migration parity. Use when asked whether a replica, warehouse copy, or synced table matches its source, or to…