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-- ========================================
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-- 重命名外键约束,使其与代码中的名称一致
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-- ========================================
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-- 步骤 1: 删除旧的外键约束
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ALTER TABLE evaluation_points
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DROP CONSTRAINT IF EXISTS fk_evaluation_points_group;
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-- 步骤 2: 创建新的外键约束,使用正确的名称
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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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-- 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(子分组)';
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-- 步骤 3: 验证外键约束(应该是正确的名称)
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SELECT
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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",
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ccu.column_name AS "引用列"
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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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-- 预期结果:
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-- 约束名 | 列名 | 引用表 | 引用列
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-- ------------------------------------------|-------------------------------|---------------------------|-------
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-- fk_evaluation_points_child_group | evaluation_point_groups_id | evaluation_point_groups | id
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-- fk_evaluation_points_parent_group | evaluation_point_groups_pid | evaluation_point_groups | id
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