 -- 使用一张MyIsam引擎的表储存，以便实现全文索引
 CREATE TABLE IF NOT EXISTS articles_content (
   id INT UNSIGNED NOT NULL COMMENT '文章id',
-  title VARCHAR(32) COLLATE utf8_bin NOT NULL COMMENT '文章标题', -- 是否使用CHAR有待商榷
+  title CHAR(55) COLLATE utf8_bin NOT NULL COMMENT '文章标题', -- 是否使用CHAR有待商榷
   content TEXT COLLATE utf8_bin NOT NULL COMMENT '文章内容',
   PRIMARY KEY (id),
   FULLTEXT KEY content_index(title,content)

(
  id INT UNSIGNED AUTO_INCREMENT NOT NULL COMMENT '用户id',
  mail VARCHAR(30) COLLATE utf8_bin NOT NULL COMMENT '用户邮箱',
  name CHAR(14) COLLATE utf8_bin NOT NULL COMMENT '用户名',
  password CHAR(32) COLLATE utf8_bin NOT NULL COMMENT '用户密码',
  create_at TIMESTAMP NOT NULL COMMENT '注册时间',
  PRIMARY KEY (id),

(
  id INT UNSIGNED AUTO_INCREMENT NOT NULL COMMENT '文章id',
  author_id INT UNSIGNED NOT NULL COMMENT '作者id',
  author_name CHAR(20) COLLATE utf8_bin NOT NULL COMMENT '作者名',
  content_digest CHAR(90) COLLATE utf8_bin NOT NULL COMMENT '文章摘要',
  update_at TIMESTAMP NOT NULL COMMENT '文章更新时间',
  create_at TIMESTAMP NOT NULL COMMENT '文章创建时间',
  PRIMARY KEY (id),
