Add SQL/1211. Queries Quality and Percentage (Claude Sonnet 4.6 Exten…#318

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Mar 4, 2026

Commits on Mar 4, 2026

Add SQL/1211. Queries Quality and Percentage (Claude Sonnet 4.6 Extended)
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Fix: Restore WHERE clause and correct FLOAT cast explanation in PostgreSQL solution
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Fix: Correct Mermaid flowchart edge for poor_query_percentage calculation without NUMERIC cast
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Docs: Update PostgreSQL doc to clarify float8 vs NUMERIC precision tradeoffs and benchmark noise
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Docs: Fix Python deduplication and precision details, PostgreSQL WHERE and index plan context
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Docs: Refine Pandas copy=False/ROUND caveats and PostgreSQL FILTER/HashAgg claims
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