78 lines
2.8 KiB
SQL
78 lines
2.8 KiB
SQL
-- ==========================================
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-- 从 member_driver 表删除 car_number 字段
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-- ==========================================
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-- 说明：
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-- 1. 司机和车辆是多对多关系，应该由独立的 vehicle 表管理
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-- 2. 删除前请确保已经将车辆信息迁移到 vehicle 表
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-- 3. 此操作不可逆，请先备份数据库
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-- ==========================================
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-- 步骤 1: 检查 member_driver 表结构
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SELECT '步骤1: 检查 member_driver 表结构' as '执行步骤';
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DESC member_driver;
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-- 步骤 2: 检查字段是否存在
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SELECT '步骤2: 检查 car_number 字段是否存在' as '执行步骤';
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SELECT COUNT(*) as 'car_number字段存在数量'
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'member_driver'
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AND COLUMN_NAME = 'car_number';
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-- 步骤 3: 检查是否有触发器引用 car_number
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SELECT '步骤3: 检查触发器' as '执行步骤';
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SHOW TRIGGERS WHERE `Table` = 'member_driver';
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-- 步骤 4: 检查是否有视图引用 car_number
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SELECT '步骤4: 检查视图' as '执行步骤';
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SELECT TABLE_NAME, VIEW_DEFINITION
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FROM INFORMATION_SCHEMA.VIEWS
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WHERE TABLE_SCHEMA = DATABASE()
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AND VIEW_DEFINITION LIKE '%car_number%';
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-- 步骤 5: 检查delivery表的触发器（重点检查）
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SELECT '步骤5: 检查 delivery 表触发器' as '执行步骤';
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SHOW TRIGGERS WHERE `Table` = 'delivery';
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-- 步骤 6: 查看完整的触发器定义
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SELECT '步骤6: 查看所有触发器的完整定义' as '执行步骤';
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SELECT
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TRIGGER_NAME as '触发器名称',
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EVENT_MANIPULATION as '触发事件',
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EVENT_OBJECT_TABLE as '关联表',
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ACTION_STATEMENT as '触发器SQL'
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FROM INFORMATION_SCHEMA.TRIGGERS
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WHERE TRIGGER_SCHEMA = DATABASE()
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AND ACTION_STATEMENT LIKE '%car_number%';
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-- ==========================================
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-- ⚠️ 重要：执行删除前请先检查上面的输出
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-- ==========================================
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-- 如果确认：
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-- 1. car_number 字段存在
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-- 2. 没有触发器或视图引用它
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-- 3. 已备份数据库
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-- 则取消下面的注释执行删除操作：
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-- ALTER TABLE member_driver DROP COLUMN IF EXISTS car_number;
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-- ==========================================
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-- 验证删除结果
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-- ==========================================
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-- 取消下面的注释验证字段已删除：
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-- SELECT '验证: car_number 字段已删除' as '执行步骤';
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-- DESC member_driver;
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-- SELECT COUNT(*) as 'car_number字段剩余数量'
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-- FROM INFORMATION_SCHEMA.COLUMNS
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-- WHERE TABLE_SCHEMA = DATABASE()
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-- AND TABLE_NAME = 'member_driver'
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-- AND COLUMN_NAME = 'car_number';
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-- ==========================================
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-- 说明：执行完成后请：
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-- 1. 清理后端 target 目录
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-- 2. 重新编译后端服务
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-- 3. 完全重启后端服务
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-- ==========================================
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