121 lines
4.6 KiB
SQL
121 lines
4.6 KiB
SQL
-- ============================================
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-- 若依多租户 - 唯一索引改造脚本
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-- 版本: 1.0
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-- 日期: 2025-12-19
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-- 警告: 执行前务必备份数据库！
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-- ============================================
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-- ============================================
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-- 第一步：检查是否存在重复数据（必须先执行）
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-- ============================================
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-- 检查 sys_user 表重复数据
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SELECT tenant_id, user_name, COUNT(*)
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FROM sys_user
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WHERE del_flag = '0'
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GROUP BY tenant_id, user_name
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HAVING COUNT(*) > 1;
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-- 如有输出，需先处理重复数据
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-- 检查 sys_role 表重复数据
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SELECT tenant_id, role_key, COUNT(*)
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FROM sys_role
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WHERE del_flag = '0'
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GROUP BY tenant_id, role_key
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HAVING COUNT(*) > 1;
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-- 如有输出，需先处理重复数据
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-- 检查 sys_post 表重复数据
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-- 注意：sys_post 表没有 del_flag 字段
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SELECT tenant_id, post_code, COUNT(*)
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FROM sys_post
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GROUP BY tenant_id, post_code
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HAVING COUNT(*) > 1;
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-- 如有输出，需先处理重复数据
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-- ============================================
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-- 第二步：执行唯一索引改造
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-- ============================================
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-- 1. sys_user表：用户名改为租户内唯一
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-- 说明：不同租户可以有同名用户（如都有 admin）
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-- 安全删除旧索引（兼容MySQL 5.7）
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SET @index_exists = (SELECT COUNT(*) FROM information_schema.statistics
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WHERE table_schema = DATABASE() AND table_name = 'sys_user' AND index_name = 'uk_user_name');
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SET @sql = IF(@index_exists > 0, 'ALTER TABLE sys_user DROP INDEX uk_user_name', 'SELECT 1');
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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-- 创建新的联合唯一索引
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ALTER TABLE sys_user ADD UNIQUE KEY uk_tenant_user_name (tenant_id, user_name);
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-- 2. sys_role表：角色标识改为租户内唯一
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-- 说明：不同租户可以有同标识角色（如都有 role_admin）
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SET @index_exists = (SELECT COUNT(*) FROM information_schema.statistics
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WHERE table_schema = DATABASE() AND table_name = 'sys_role' AND index_name = 'uk_role_key');
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SET @sql = IF(@index_exists > 0, 'ALTER TABLE sys_role DROP INDEX uk_role_key', 'SELECT 1');
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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ALTER TABLE sys_role ADD UNIQUE KEY uk_tenant_role_key (tenant_id, role_key);
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-- 3. sys_post表：岗位编码改为租户内唯一
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-- 说明：不同租户可以有同编码岗位（如都有 ceo）
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SET @index_exists = (SELECT COUNT(*) FROM information_schema.statistics
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WHERE table_schema = DATABASE() AND table_name = 'sys_post' AND index_name = 'uk_post_code');
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SET @sql = IF(@index_exists > 0, 'ALTER TABLE sys_post DROP INDEX uk_post_code', 'SELECT 1');
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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ALTER TABLE sys_post ADD UNIQUE KEY uk_tenant_post_code (tenant_id, post_code);
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-- ============================================
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-- 第三步：验证索引创建
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-- ============================================
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-- 验证 sys_user 索引
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SHOW INDEX FROM sys_user WHERE Key_name = 'uk_tenant_user_name';
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-- 验证 sys_role 索引
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SHOW INDEX FROM sys_role WHERE Key_name = 'uk_tenant_role_key';
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-- 验证 sys_post 索引
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SHOW INDEX FROM sys_post WHERE Key_name = 'uk_tenant_post_code';
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-- ============================================
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-- 执行结果说明
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-- ============================================
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-- 每个表应该显示索引的两条记录（tenant_id 和对应的业务字段）
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-- Seq_in_index = 1: tenant_id
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-- Seq_in_index = 2: user_name / role_key / post_code
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-- ============================================
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-- 回滚脚本（仅供紧急情况使用）
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-- ============================================
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/*
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-- 警告：回滚将恢复到单租户模式，可能导致数据冲突！
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-- 回滚 sys_user 索引
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ALTER TABLE sys_user DROP INDEX IF EXISTS uk_tenant_user_name;
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ALTER TABLE sys_user ADD UNIQUE KEY uk_user_name (user_name);
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-- 回滚 sys_role 索引
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ALTER TABLE sys_role DROP INDEX IF EXISTS uk_tenant_role_key;
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ALTER TABLE sys_role ADD UNIQUE KEY uk_role_key (role_key);
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-- 回滚 sys_post 索引
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ALTER TABLE sys_post DROP INDEX IF EXISTS uk_tenant_post_code;
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ALTER TABLE sys_post ADD UNIQUE KEY uk_post_code (post_code);
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*/
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-- ============================================
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-- 执行注意事项
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-- ============================================
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-- 1. 选择业务低峰期执行（预计停机10-30分钟）
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-- 2. 执行前完整备份数据库：mysqldump -u root -p database_name > backup.sql
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-- 3. 务必先执行第一步的重复数据检查
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-- 4. 如有重复数据，需先清理或合并
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-- 5. 大表索引创建较慢，耐心等待不要中断
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-- 6. 准备回滚脚本以备不时之需
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-- 7. 执行完毕后验证应用功能正常
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