权限系统 5个表

1 用户表

CREATE TABLE `statistics_users` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `user_name` varchar(30) DEFAULT NULL,
  `user_password` varchar(100) DEFAULT NULL,
  `user_ip` varchar(50) DEFAULT NULL,
  `user_mobile` varchar(11) DEFAULT NULL,
  `token` int(50) DEFAULT NULL,
  `real_name` varchar(50) DEFAULT NULL,
  `is_del` tinyint(1) NOT NULL DEFAULT '0' COMMENT '是否删除 0 正常；1 已删除；',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=317 DEFAULT CHARSET=utf8 COMMENT='统计系统会员表'

2 角色表

CREATE TABLE `statistics_role` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `role_name` varchar(50) DEFAULT NULL COMMENT '角色名称',
  `is_del` tinyint(1) DEFAULT NULL COMMENT '是否删除 0 正常；1 已删除',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8

3 菜单表

CREATE TABLE `statistics_menu` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `menu_action` varchar(100) DEFAULT NULL COMMENT '角色名',
  `is_del` tinyint(1) NOT NULL DEFAULT '0' COMMENT '是否删除',
  `fid` int(8) unsigned NOT NULL DEFAULT '0' COMMENT '父分类',
  `order` int(8) unsigned NOT NULL DEFAULT '0' COMMENT '排序',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8

4 菜单角色表

CREATE TABLE `statistics_role_menu` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `role_id` int(11) DEFAULT NULL COMMENT '角色id',
  `menu_id` int(11) DEFAULT NULL COMMENT '菜单id',
  `is_del` tinyint(1) DEFAULT '0' COMMENT '是否删除 1 已删除',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8

5 用户角色表

CREATE TABLE `statistics_user_role` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `user_id` int(11) unsigned NOT NULL COMMENT '会员id',
  `role_id` int(11) DEFAULT NULL COMMENT '角色id',
  `is_del` tinyint(1) NOT NULL DEFAULT '0' COMMENT '是否删除',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='用户和角色的对应表'

根据uid查权限

SELECT 
  sm.menu_action 
FROM
  `statistics_users` AS su 
  LEFT JOIN `statistics_user_role` AS sur 
    ON su.id = sur.user_id 
  LEFT JOIN `statistics_role_menu` AS stm 
    ON stm.role_id = sur.role_id 
  LEFT JOIN `statistics_menu` AS sm 
    ON sm.id = stm.menu_id 
  LEFT JOIN `statistics_role` AS sr 
    ON sr.id = sur.role_id 
WHERE su.id = 316 
  AND sur.is_del = 0 
  AND su.is_del = 0 
  AND stm.is_del = 0 
  AND sm.is_del = 0 
  AND sr.`is_del` = 0