54 lines
1.9 KiB
SQL
54 lines
1.9 KiB
SQL
-- ========================================
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-- 简化版外键约束（不需要自引用）
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-- ========================================
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-- 步骤 1: 将所有 pid=0 改为 NULL（标准做法）
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UPDATE evaluation_point_groups
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SET pid = NULL
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WHERE pid = 0;
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-- 步骤 2: 为 evaluation_points 添加外键约束
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-- 2.1 子分组外键：evaluation_point_groups_id → evaluation_point_groups.id
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ALTER TABLE evaluation_points
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ADD CONSTRAINT fk_evaluation_points_child_group
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FOREIGN KEY (evaluation_point_groups_id)
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REFERENCES evaluation_point_groups(id)
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ON DELETE SET NULL
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ON UPDATE CASCADE;
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-- 2.2 父分组外键：evaluation_point_groups_pid → evaluation_point_groups.id
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ALTER TABLE evaluation_points
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ADD CONSTRAINT fk_evaluation_points_parent_group
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FOREIGN KEY (evaluation_point_groups_pid)
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REFERENCES evaluation_point_groups(id)
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ON DELETE SET NULL
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ON UPDATE CASCADE;
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-- ⚠️ 注意：不再需要 evaluation_point_groups 表的自引用外键
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-- 因为 evaluation_points 已经直接存储了父级分组ID
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-- 添加注释
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COMMENT ON CONSTRAINT fk_evaluation_points_child_group ON evaluation_points
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IS '评查点所属规则组外键约束（二级分组）';
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COMMENT ON CONSTRAINT fk_evaluation_points_parent_group ON evaluation_points
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IS '评查点类型外键约束（父级分组）';
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-- 步骤 3: 验证外键约束是否创建成功
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SELECT
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tc.table_name AS "表名",
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tc.constraint_name AS "约束名",
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kcu.column_name AS "列名",
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ccu.table_name AS "引用表名",
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ccu.column_name AS "引用列名"
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FROM information_schema.table_constraints AS tc
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JOIN information_schema.key_column_usage AS kcu
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ON tc.constraint_name = kcu.constraint_name
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JOIN information_schema.constraint_column_usage AS ccu
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ON ccu.constraint_name = tc.constraint_name
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WHERE tc.constraint_type = 'FOREIGN KEY'
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AND tc.table_name = 'evaluation_points'
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AND kcu.column_name IN ('evaluation_point_groups_id', 'evaluation_point_groups_pid')
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ORDER BY kcu.column_name;
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