Optimize rewrite performance and SPJ new #24
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Pull request overview
This PR optimizes the rewrite performance for materialized view matching by reducing redundant tree traversals and adding fast paths for common cases. The changes upstream two PRs from the datafusion-materialized-views repository focused on performance improvements.
Changes:
- Consolidates multiple tree traversals into single-pass collection of schema, columns, filters, and referenced tables
- Adds fast-path optimizations for simple Column expressions to avoid expensive tree transformations
- Caches frequently-accessed data structures to reduce allocation overhead
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Upstream PRs to optimize:
datafusion-contrib#113
datafusion-contrib#115