15 lines
434 B
SQL
15 lines
434 B
SQL
-- 添加coupon表缺失的字段
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-- 2026-01-25
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-- 检查字段是否存在
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SELECT COLUMN_NAME
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_SCHEMA = 'peixue'
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AND TABLE_NAME = 'coupon'
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AND COLUMN_NAME = 'limit_per_user';
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-- 如果上面查询结果为空，执行下面的语句添加字段
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ALTER TABLE coupon
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ADD COLUMN limit_per_user INT DEFAULT -1 COMMENT '每人限领数量（-1表示不限制）'
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AFTER used_quantity;
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