存储过程中给变量赋值
我的问题
在存储过程中设一变量：

 declare @shuliang nvarchar (50)

SELECT sum  (convert (int, [yingtuishu] )) FROM [Faliaominxi]where [liaohao]=@liaohao and [mark]='0' and [faliaodan]<>@faliaodan

@faliaodan、@liaohao 为存储过程的参数

现在需要select sum 计算出来的值 赋值给变量 @shuliang 需要怎么做请高手指点。
[解决办法]

 DECLARE @shuliang NVARCHAR(50)
  SELECT @shuliang = SUM(CONVERT (INT, [yingtuishu]))
  FROM   [Faliaominxi]
  WHERE  [liaohao] = @liaohao
         AND [mark] = '0'
         AND [faliaodan] <> @faliaodan