56 lines
1.6 KiB
MySQL
56 lines
1.6 KiB
MySQL
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/*
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数据库升级脚本 - 分离联络单号和件号
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执行日期: 2026-02-04
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目的: 将barcode字段拆分为ContactNumber和ItemNumber两个独立字段
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影响表: scandata
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*/
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USE fullautowaterpressure;
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-- 1. 添加新字段
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ALTER TABLE `scandata`
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ADD COLUMN `ContactNumber` VARCHAR(100) NULL COMMENT '联络单号' AFTER `barcode`,
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ADD COLUMN `ItemNumber` VARCHAR(100) NULL COMMENT '件号' AFTER `ContactNumber`;
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-- 2. 迁移现有数据（如果barcode包含"-"分隔符）
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UPDATE `scandata`
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SET
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`ContactNumber` = SUBSTRING_INDEX(`barcode`, '-', 1),
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`ItemNumber` = SUBSTRING_INDEX(`barcode`, '-', -1)
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WHERE `barcode` IS NOT NULL AND `barcode` LIKE '%-%';
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-- 3. 对于没有分隔符的数据，将整个barcode作为联络单号
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UPDATE `scandata`
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SET
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`ContactNumber` = `barcode`,
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`ItemNumber` = ''
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WHERE `barcode` IS NOT NULL AND `barcode` NOT LIKE '%-%';
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-- 4. 添加索引以提高查询性能
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CREATE INDEX `idx_contact_number` ON `scandata`(`ContactNumber`);
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CREATE INDEX `idx_item_number` ON `scandata`(`ItemNumber`);
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-- 5. 验证数据迁移
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SELECT
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COUNT(*) as total_records,
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COUNT(ContactNumber) as has_contact_number,
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COUNT(ItemNumber) as has_item_number
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FROM `scandata`;
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-- 6. 显示迁移后的示例数据
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SELECT
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Id,
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barcode as '原条码',
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ContactNumber as '联络单号',
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ItemNumber as '件号',
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CreateTime
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FROM `scandata`
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ORDER BY Id DESC
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LIMIT 10;
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-- 注意：
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-- 1. barcode字段保留用于兼容性，不删除
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-- 2. 新数据将同时填充barcode、ContactNumber和ItemNumber
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-- 3. 如果需要回滚，可以删除新增的两个字段
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