19 lines
616 B
SQL
19 lines
616 B
SQL
-- 为 yifan_naming_reports 表添加 uuid 字段
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ALTER TABLE yifan_naming_reports
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ADD COLUMN uuid VARCHAR(64) NOT NULL DEFAULT '' COMMENT 'UUID全局唯一标识' AFTER id;
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-- 为现有数据生成 UUID
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UPDATE yifan_naming_reports
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SET uuid = CONCAT(
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SUBSTRING(MD5(CONCAT(id, RAND())), 1, 8), '-',
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SUBSTRING(MD5(CONCAT(id, RAND())), 9, 4), '-',
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SUBSTRING(MD5(CONCAT(id, RAND())), 13, 4), '-',
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SUBSTRING(MD5(CONCAT(id, RAND())), 17, 4), '-',
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SUBSTRING(MD5(CONCAT(id, RAND())), 21, 12)
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)
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WHERE uuid = '';
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-- 添加唯一索引
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ALTER TABLE yifan_naming_reports
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ADD UNIQUE INDEX uk_uuid (uuid);
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