我想在我的博客表中将一列从 read-more 重命名为 read_more

我尝试了所有这些：

  ALTER TABLE blog RENAME COLUMN read-more to read_more;
  ALTER TABLE blog CHANGE COLUMN 'read-more' 'read_more' VARCHAR(255) NOT NULL;

我总是得到这个！

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'COLUMN read-more to read_more' at line 1

我正在使用 MySQL 5.5