diff --git a/database.sql b/database.sql
index 06d70d8..6ee41a2 100644
--- a/database.sql
+++ b/database.sql
@@ -82,7 +82,7 @@ create table article_comments
     articleId    bigint            not null comment '对应的文评ID',
     user_id      varchar(40)       not null comment '对应的用户ID',
     parent_id    int               null comment '关联本表的 id，用于回复功能。 如果为 0 或 NULL，则为顶级评论。',
-    content      int               not null comment '具体评论',
+    content      text              not null comment '具体评论',
     created_time datetime          not null comment '评论创建时间',
     update_time  datetime          not null comment '更新时间',
     likes_count  int     default 0 not null comment '点赞数量',
@@ -177,20 +177,84 @@ create table referral_codes
     id          int auto_increment comment '内推码Id'
         primary key,
     code        int         not null comment '内推码',
-    articleId   bigint      not null comment '内推文评',
     created_by  varchar(40) not null comment '创建者ID',
     valid_until datetime    not null comment '有效期',
     uses_num    int         not null comment '使用次数',
     create_time datetime    not null comment '创建时间',
     constraint referral_codes_pk_2
         unique (code),
-    constraint referral_codes_article_list_articleId_fk
-        foreign key (articleId) references article_list (articleId),
     constraint referral_codes_user_info_uid_fk
         foreign key (created_by) references user_info (uid)
 )
     comment '内推码表';
 
+create table lottery_campaigns
+(
+    id                   int auto_increment comment '活动id'
+        primary key,
+    name                 varchar(255)  not null comment '活动名称',
+    description          text          null comment '活动描述',
+    referral_code_id     int           not null comment '内推码id',
+    start_time           datetime      not null comment '活动开始时间',
+    end_time             datetime      not null comment '活动结束时间',
+    is_ended             int           not null comment '活动是否结束，1:结束，2：未结束',
+    created_time         datetime      not null comment '创建时间',
+    update_time          datetime      not null comment '更新时间',
+    max_lottery_per_user int default 1 not null comment '每个用户的最大抽奖次数',
+    constraint lottery_campaigns_referral_codes_id_fk
+        foreign key (referral_code_id) references referral_codes (id)
+)
+    comment '抽奖活动表';
+
+create table lottery_prizes
+(
+    id           int auto_increment comment '奖项id'
+        primary key,
+    campaign_id  int           not null comment '关联活动ID',
+    name         varchar(255)  not null comment '奖项名称',
+    image_url    varchar(255)  not null comment '奖项图片URL',
+    probability  float         not null comment '奖项中奖概率',
+    max_wins     int           not null comment '最大中奖次数',
+    current_wins int default 0 not null comment '当前中奖人数',
+    create_time  datetime      not null comment '创建时间',
+    update_time  datetime      not null comment '更新时间',
+    constraint lottery_prizes_lottery_campaigns_id_fk
+        foreign key (campaign_id) references lottery_campaigns (id)
+)
+    comment '抽奖奖项表';
+
+create table lottery_records
+(
+    id               int auto_increment comment '记录ID'
+        primary key,
+    user_id          varchar(40) not null comment '抽奖用户ID',
+    campaign_id      int         not null comment '关联活动ID',
+    referral_code_id int         not null,
+    prize_id         int         not null comment '中奖选项ID',
+    is_win           int         not null comment '是否中奖，1:中奖，2:未中奖',
+    create_time      datetime    not null comment '抽奖时间',
+    constraint lottery_records_lottery_campaigns_id_fk
+        foreign key (campaign_id) references lottery_campaigns (id),
+    constraint lottery_records_lottery_prizes_id_fk
+        foreign key (prize_id) references lottery_prizes (id),
+    constraint lottery_records_referral_codes_id_fk
+        foreign key (referral_code_id) references referral_codes (id)
+)
+    comment '抽奖记录表';
+
+create table referral_code_bindings
+(
+    id          int auto_increment comment '关联记录ID'
+        primary key,
+    code_id     int         not null comment '关联内推码ID',
+    entity_type varchar(50) not null comment '业务类型',
+    entity_id   int         not null comment '关联实体ID',
+    create_time datetime    not null comment '创建时间',
+    constraint referral_code_bindings_referral_codes_id_fk
+        foreign key (code_id) references referral_codes (id)
+)
+    comment '内推码业务关联表';
+
 create table user_msg
 (
     sender_id    varchar(30) not null,