我對更新命令 sql 有疑問

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");

它告訴我語法“AS”附近的語法不正確

Answer 1

假設您使用的是 MS SQL 服務器，則您的 SQL 不正確

它應該是

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