文件还在测试中
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-- 示例升级包:演示「幂等」写法,可安全多次执行
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-- 复制本文件到上级目录(install/upgrades/)根下,即可在后台「数据库升级」中看到并升级。
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-- 1) 为新模块创建一张表(若已存在则跳过)
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CREATE TABLE IF NOT EXISTS psi_demo_log (
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id INT AUTO_INCREMENT PRIMARY KEY,
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msg VARCHAR(255) NOT NULL,
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created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='示例升级包日志表';
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-- 2) 写入一条演示记录(依赖唯一键可避免重复)
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INSERT INTO psi_demo_log (msg) VALUES ('示例升级包已执行')
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ON DUPLICATE KEY UPDATE msg = VALUES(msg);
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