22 lines
737 B
MySQL
22 lines
737 B
MySQL
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-- 修复 signin_logs 外键：删除账号时级联删除签到记录
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-- 用法: mysql -u weibo -p123456 weibo_hotsign < migrate_fix_signin_logs_fk.sql
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-- 先查出旧外键名并删除，再重建
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SET @fk_name = (
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SELECT CONSTRAINT_NAME FROM information_schema.KEY_COLUMN_USAGE
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WHERE TABLE_SCHEMA = 'weibo_hotsign'
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AND TABLE_NAME = 'signin_logs'
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AND COLUMN_NAME = 'account_id'
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AND REFERENCED_TABLE_NAME = 'accounts'
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LIMIT 1
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);
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SET @sql = CONCAT('ALTER TABLE signin_logs DROP FOREIGN KEY ', @fk_name);
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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ALTER TABLE signin_logs
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ADD CONSTRAINT fk_signin_logs_account
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FOREIGN KEY (account_id) REFERENCES accounts(id) ON DELETE CASCADE;
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