46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
-- base_sys_user_role 角色授权去重
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-- 只处理未软删除的有效授权；软删除历史记录不参与去重和唯一约束
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-- 保留每组有效 userId + roleId 中 id 最小的一条，删除其余重复记录
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-- 1. 执行前查看重复数据
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SELECT
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"userId",
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"roleId",
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COUNT(*) AS cnt,
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MIN(id) AS keep_id,
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ARRAY_AGG(id ORDER BY id) AS ids
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FROM base_sys_user_role
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WHERE deleted_at IS NULL
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GROUP BY "userId", "roleId"
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HAVING COUNT(*) > 1
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ORDER BY cnt DESC, "userId", "roleId";
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-- 2. 删除重复数据
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DELETE FROM base_sys_user_role a
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USING base_sys_user_role b
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WHERE a."userId" = b."userId"
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AND a."roleId" = b."roleId"
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AND a.deleted_at IS NULL
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AND b.deleted_at IS NULL
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AND a.id > b.id;
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-- 3. 执行后复查，应返回 0 行
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SELECT
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"userId",
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"roleId",
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COUNT(*) AS cnt
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FROM base_sys_user_role
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WHERE deleted_at IS NULL
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GROUP BY "userId", "roleId"
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HAVING COUNT(*) > 1;
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-- 4. 建议约束：只限制未软删除授权唯一，允许历史软删除授权保留
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ALTER TABLE base_sys_user_role
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DROP CONSTRAINT IF EXISTS uk_base_sys_user_role_user_role;
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DROP INDEX IF EXISTS uk_base_sys_user_role_user_role;
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CREATE UNIQUE INDEX IF NOT EXISTS uk_base_sys_user_role_user_role
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ON base_sys_user_role ("userId", "roleId")
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WHERE deleted_at IS NULL;
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