feature-sql-tool 2.4.2

SQL feature lineage extraction and unified vector SQL planning

feature-sql-tool

Current implementation of feature-sql-tool focused on:

• recursive column resolution through CTEs and scope aliases
• computed-vs-passthrough alias classification
• intermediate feature extraction
• filter_only_intermediate_features classification through graph reachability
• multi-feature unified graph building
• safe SQL optimization by merging features with identical logical query shape

Current scope

This package is a practical implementation scaffold with working core logic for:

• scope parsing
• recursive lineage for one feature
• filter_only classification
• safe grouping of multiple feature queries into shared aggregate CTEs when their WITH/FROM/JOIN/WHERE/GROUP/HAVING/QUALIFY signatures are identical

Notes

The optimizer intentionally uses safe reuse only. It merges features only when their normalized query shape matches exactly.

Optimized reusable-stage SQL builder (2.0.0)

Use FeatureSqlTool.build_optimized_unified_sql(features) to build unified SQL with reusable base and aggregate CTE stages when possible.