81 lines
2.0 KiB
SQL
81 lines
2.0 KiB
SQL
-- =============================================
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-- 数据库迁移脚本：为 member_driver 表添加 id_card 字段
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-- 用途：存储司机身份证前后面照片地址
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-- 创建时间：2025-10-20
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-- 数据库：MySQL
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-- 版本：安全版本（包含错误处理）
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-- =============================================
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-- 开始事务
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START TRANSACTION;
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-- 检查表是否存在
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SET @table_exists = (
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SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.TABLES
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WHERE TABLE_SCHEMA = DATABASE()
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AND TABLE_NAME = 'member_driver'
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);
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-- 如果表不存在，回滚并退出
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IF @table_exists = 0 THEN
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ROLLBACK;
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SELECT 'ERROR: member_driver 表不存在' AS result;
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LEAVE;
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END IF;
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-- 检查字段是否已存在
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SET @column_exists = (
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SELECT COUNT(*)
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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 = 'id_card'
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);
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-- 如果字段已存在，回滚并退出
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IF @column_exists > 0 THEN
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ROLLBACK;
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SELECT 'WARNING: id_card 字段已存在，无需添加' AS result;
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LEAVE;
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END IF;
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-- 添加 id_card 字段
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ALTER TABLE member_driver
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ADD COLUMN id_card TEXT COMMENT '身份证前后面照片地址（多个URL用逗号分隔）'
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AFTER car_img;
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-- 验证字段是否添加成功
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SET @verify_result = (
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SELECT COUNT(*)
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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 = 'id_card'
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);
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-- 如果验证失败，回滚
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IF @verify_result = 0 THEN
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ROLLBACK;
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SELECT 'ERROR: id_card 字段添加失败' AS result;
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LEAVE;
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END IF;
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-- 提交事务
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COMMIT;
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-- 显示成功信息
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SELECT 'SUCCESS: id_card 字段添加成功' AS result;
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-- 显示字段信息
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SELECT
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COLUMN_NAME as '字段名',
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DATA_TYPE as '数据类型',
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IS_NULLABLE as '允许空值',
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COLUMN_DEFAULT as '默认值',
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COLUMN_COMMENT as '注释'
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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 = 'id_card';
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