51 lines
1.8 KiB
SQL
51 lines
1.8 KiB
SQL
-- =====================================================
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-- 数据库升级脚本：normaltemperature表添加联络单号和件号字段
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-- 创建时间：2026-02-04
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-- 说明：将barcode字段拆分为ContactNumber和ItemNumber两个独立字段
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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 `normaltemperature`
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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（假设barcode格式为"联络单号-件号"）
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-- 如果barcode包含"-"，则拆分
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UPDATE `normaltemperature`
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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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-- 如果barcode不包含"-"，则全部作为联络单号
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UPDATE `normaltemperature`
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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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-- 3. 创建索引以提高查询性能
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CREATE INDEX `idx_contact_number` ON `normaltemperature`(`ContactNumber`);
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CREATE INDEX `idx_item_number` ON `normaltemperature`(`ItemNumber`);
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-- 4. 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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COUNT(CASE WHEN ContactNumber IS NOT NULL AND ItemNumber IS NOT NULL THEN 1 END) as both_fields
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FROM normaltemperature;
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-- 5. 显示示例数据
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SELECT
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Id, barcode, ContactNumber, ItemNumber, CreateTime
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FROM normaltemperature
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ORDER BY Id DESC
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LIMIT 10;
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-- =====================================================
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-- 升级完成
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-- =====================================================
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