32 lines
705 B
MySQL
32 lines
705 B
MySQL
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-- 回滚scandata表新增字段：刻字号、数量、压差设置、标准误差
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-- 执行日期：2026-02-04
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USE fullautowaterpressure;
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-- 删除刻字号字段
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ALTER TABLE scandata
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DROP COLUMN IF EXISTS EngravingNumber;
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-- 删除数量字段
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ALTER TABLE scandata
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DROP COLUMN IF EXISTS Quantity;
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-- 删除压差设置字段
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ALTER TABLE scandata
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DROP COLUMN IF EXISTS PressureDifference;
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-- 删除标准误差字段
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ALTER TABLE scandata
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DROP COLUMN IF EXISTS StandardError;
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-- 验证字段是否删除成功
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SELECT
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COLUMN_NAME,
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DATA_TYPE,
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COLUMN_COMMENT
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FROM
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INFORMATION_SCHEMA.COLUMNS
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WHERE
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TABLE_SCHEMA = 'fullautowaterpressure'
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AND TABLE_NAME = 'scandata';
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