From 98785fc42121de7cae154441138d345160a34cc1 Mon Sep 17 00:00:00 2001
From: Wonder <hezhaohui0807@163.com>
Date: Fri, 17 Oct 2025 22:59:29 +0800
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---
 README.md | 11 ++++++++++-
 init.sql  | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 init.sql

diff --git a/README.md b/README.md
index 893c98d..59fac41 100644
--- a/README.md
+++ b/README.md
@@ -25,4 +25,13 @@
 ### 博客模块
 
 1. 获取博客
-2. 获取博客列表
\ No newline at end of file
+2. 获取博客列表
+
+## QA
+
+1. 如何从数据库层面杜绝重复数据出现？
+
+答：对于 `thumb` 表，使用联合唯一索引
+```mysql
+CREATE UNIQUE INDEX idx_userId_blogId ON thumb (userId, blogId);
+```
\ No newline at end of file
diff --git a/init.sql b/init.sql
new file mode 100644
index 0000000..5e8f8f0
--- /dev/null
+++ b/init.sql
@@ -0,0 +1,36 @@
+# 创建数据库
+CREATE DATABASE IF NOT EXISTS thumb_up;
+
+# 切换数据库
+USE thumb_up;
+
+# 用户表
+CREATE TABLE IF NOT EXISTS user
+(
+    id          BIGINT          AUTO_INCREMENT PRIMARY KEY COMMENT 'id',
+    username    VARCHAR(128)    NOT NULL COMMENT '用户名'
+);
+
+# 博客表
+CREATE TABLE IF NOT EXISTS blog
+(
+    id          BIGINT      AUTO_INCREMENT PRIMARY KEY COMMENT 'id',
+    userId      BIGINT      NOT NULL COMMENT '用户 id',
+    title       VARCHAR(512)    NULL COMMENT '标题',
+    coverImg    VARCHAR(1024)   NULL COMMENT '封面',
+    content     TEXT        NOT NULL COMMENT '内容',
+    thumbCount  INT         DEFAULT 0 NOT NULL COMMENT '点赞数',
+    createTime  DATETIME    DEFAULT CURRENT_TIMESTAMP NOT NULL COMMENT '创建时间',
+    updateTime  DATETIME    DEFAULT CURRENT_TIMESTAMP NOT NULL ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间'
+);
+CREATE INDEX idx_userId ON blog(userId);
+
+# 点赞记录表
+CREATE TABLE IF NOT EXISTS thumb
+(
+    id              BIGINT AUTO_INCREMENT PRIMARY KEY COMMENT 'id',
+    userId          BIGINT NOT NULL COMMENT '用户 id',
+    blogId          BIGINT NOT NULL COMMENT '博客 id',
+    createTime      DATETIME    DEFAULT CURRENT_TIMESTAMP NOT NULL COMMENT '创建时间'
+);
+CREATE UNIQUE INDEX idx_userId_blogId ON thumb (userId, blogId) ;
\ No newline at end of file