43 lines
2.0 KiB
MySQL
43 lines
2.0 KiB
MySQL
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create database demo;
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CREATE TABLE `school`
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(
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`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
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`name` varchar(64) NOT NULL COMMENT '名称',
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`address` varchar(128) NOT NULL COMMENT '密码',
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`create_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`update_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='学校';
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CREATE TABLE `student`
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(
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`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
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`name` varchar(64) NOT NULL COMMENT '姓名',
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`age` tinyint NOT NULL COMMENT '年龄',
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`create_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`update_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='学生';
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CREATE TABLE `teacher`
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(
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`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
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`name` varchar(64) NOT NULL COMMENT '姓名',
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`age` tinyint NOT NULL COMMENT '年龄',
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`create_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`update_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='教师';
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CREATE TABLE `school_student_teacher`
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(
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`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键',
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`school_id` bigint(20) NOT NULL COMMENT '学校id',
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`teacher_id` bigint(20) NOT NULL COMMENT '教师id',
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`student_id` bigint(20) NOT NULL COMMENT '学生id',
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`create_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
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`update_dt` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
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PRIMARY KEY (`id`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='学校学生老师表';
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