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• v0.7 — Performance Rules Pack

  **Theme:** catch SQL patterns that compile fine and run slowly. Builds on the v0.6 W017 / W018 / W019 trio (leading-wildcard-like, or-across-columns, count-distinct-unbounded). ## In scope New performance-flavoured warning rules: - cross-join-without-on (W021 candidate) - function-on-indexed-column (W022 candidate) - scalar-udf-in-where (W023 candidate) - negate-of-equality (W024 candidate) - select-star-in-view-or-cte (W025 candidate) Also in scope: - Dialect-aware messaging on existing rules (Postgres / T-SQL / Redshift) - `--severity` threshold flag improvements (comma-separated lists) - Self-benchmark perf gate in CI (catch regressions in scan speed) ## Out of scope for v0.7 LSP server, sqlglot-based AST detection, auto-fix application, plugin system. See [ROADMAP.md](https://github.com/Pawansingh3889/sql-guard/blob/main/ROADMAP.md) for the full picture. ## How to contribute Each new rule mirrors the W019 shape. See [PR #29](https://github.com/Pawansingh3889/sql-guard/pull/29) and [PR #21](https://github.com/Pawansingh3889/sql-guard/pull/21) for full review cycles. Pick a [`good first issue`](https://github.com/Pawansingh3889/sql-guard/labels/good%20first%20issue) tagged to this milestone, follow the rule-authoring template in [CONTRIBUTING.md](https://github.com/Pawansingh3889/sql-guard/blob/main/CONTRIBUTING.md), and open a PR.

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