init: 初始化 dpb 桃育种系统代码库

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backend/sql/weld_combination_funnel.sql

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+-- 组合得失漏斗 v_combination_funnel：按 bre_cross_combination 汇总六级派生指标。
+-- 花(bre_pollination) → 果(effective_count) → 种(bre_seed_lot) → 苗(bre_seedling)
+--   → 定植(bre_planting) → 树(bre_tree) → 入选(bre_selection_result)。
+-- 数据源全为既有表，仅聚合不改写源数据；普通 VIEW 保 fresh（F2 决策：统计管线用普通 VIEW）。
+-- 幂等：DROP IF EXISTS + CREATE OR REPLACE，可重跑。
+DROP VIEW IF EXISTS v_combination_funnel;
+CREATE OR REPLACE VIEW v_combination_funnel AS
+WITH p AS (  -- 花 → 果
+    SELECT combination_id,
+           SUM(flower_count)   AS flower_count,
+           SUM(effective_count) AS effective_count
+    FROM bre_pollination
+    WHERE is_deleted = false
+    GROUP BY combination_id
+), sl AS (  -- 果 → 种
+    SELECT combination_id,
+           SUM(seed_count)       AS seed_count,
+           AVG(germination_rate) AS germination_rate
+    FROM bre_seed_lot
+    WHERE is_deleted = false
+    GROUP BY combination_id
+), sd AS (  -- 种 → 苗
+    SELECT combination_id,
+           SUM(seedling_count)        AS seedling_count,
+           SUM(strong_seedling_count) AS strong_seedling_count
+    FROM bre_seedling
+    WHERE is_deleted = false
+    GROUP BY combination_id
+), pt AS (  -- 苗 → 定植
+    SELECT combination_id,
+           SUM(tree_count) AS planting_count
+    FROM bre_planting
+    WHERE is_deleted = false
+    GROUP BY combination_id
+), tr AS (  -- 定植 → 单株（非软删全计，含死亡，作评价群体基数）
+    SELECT combination_id,
+           COUNT(*) AS tree_count
+    FROM bre_tree
+    WHERE is_deleted = false
+    GROUP BY combination_id
+), sr AS (  -- 单株 → 入选
+    SELECT combination_id,
+           COUNT(*) AS selected_count
+    FROM bre_selection_result
+    WHERE is_deleted = false
+    GROUP BY combination_id
+)
+SELECT
+    cc.id                     AS combination_id,
+    cc.combination_code,
+    cc.cross_year,
+    cc.female_parent_id,
+    cc.male_parent_id,
+    cc.design_type,
+    cc.stage,
+    -- 花 → 果
+    p.flower_count,
+    p.effective_count,
+    CASE WHEN p.flower_count > 0
+         THEN ROUND(p.effective_count::numeric / p.flower_count * 100, 2)
+         ELSE NULL END        AS fruit_set_rate,          -- 结实率(%)
+    -- 果 → 种
+    sl.seed_count,
+    sl.germination_rate,                                  -- 种子批平均发芽率(%)
+    -- 种 → 苗
+    sd.seedling_count,
+    sd.strong_seedling_count,
+    CASE WHEN sl.seed_count > 0
+         THEN ROUND(sd.seedling_count::numeric / sl.seed_count * 100, 2)
+         ELSE NULL END        AS emergence_rate,          -- 出苗率(%)
+    -- 苗 → 定植
+    pt.planting_count,
+    -- 定植 → 单株
+    tr.tree_count,
+    -- 单株 → 入选（选择强度：入选率）
+    sr.selected_count,
+    CASE WHEN tr.tree_count > 0
+         THEN ROUND(sr.selected_count::numeric / tr.tree_count * 100, 2)
+         ELSE NULL END        AS selection_rate           -- 入选率/选择强度(%)
+FROM bre_cross_combination cc
+LEFT JOIN p  ON p.combination_id  = cc.id
+LEFT JOIN sl ON sl.combination_id = cc.id
+LEFT JOIN sd ON sd.combination_id = cc.id
+LEFT JOIN pt ON pt.combination_id = cc.id
+LEFT JOIN tr ON tr.combination_id = cc.id
+LEFT JOIN sr ON sr.combination_id = cc.id
+WHERE cc.is_deleted = false;