rosemariejebbjtxbfp
ab7a964934
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
16 lines
900 B
SQL
16 lines
900 B
SQL
-- 检索优化(可扩展性路线图 阶段0):为最常见的"浏览"路径补部分/复合索引。
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-- 搜索查询恒带 WHERE status = 'active';无关键词时按 quality_score DESC, name 排序。
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-- 现有索引无法同时满足"过滤 active + 按 quality_score/name 排序",深翻页时需要对全部
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-- active 行排序。下面的部分复合索引让规划器直接走索引顺序扫描,省掉排序、加速深翻页与
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-- count(*)。索引只覆盖 active 行,体积更小。
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-- 默认浏览(无关键词、无品类):ORDER BY quality_score DESC, name
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CREATE INDEX IF NOT EXISTS idx_product_active_quality
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ON product (quality_score DESC, name)
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WHERE status = 'active';
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-- 品类内浏览:先按 category_id 收敛,再按 quality_score 排序
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CREATE INDEX IF NOT EXISTS idx_product_active_category
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ON product (category_id, quality_score DESC)
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WHERE status = 'active';
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