我对更新命令 sql 有疑问

Question

 sb.Append("UPDATE Users AS u ");
    sb.Append(" SET u.Reputation = (u.Reputation + @Repuation)");
    sb.Append(" INNER JOIN Comments AS c ON c.UsersID=u.UsersID");
    sb.Append(" WHERE c.CommentsID=@CommentsID");

它告诉我语法“AS”附近的语法不正确

Answer 1

假设您使用的是 MS SQL 服务器，则您的 SQL 不正确

它应该是

UPDATE u
SET u.Reputation = (u.Reputation + @Reputation)
FROM Users u
INNER JOIN Comments c ON c.UsersID = u.UsersID
WHERE c.CommentsID = @CommentsID