用存储过程进行的查询拼接

DAl:  

    #region 查询拼接

        public DataView SelectAppend(string username, string sex, string permission)

        {

              string procedure = "exec dbo.zmt_procedure @username,@sex,@permission";

              SqlParameter sqlparameter1 = new SqlParameter("@username", string.Format("%{0}%", username));

            SqlParameter sqlparameter2 = new SqlParameter("@sex", sex);

            SqlParameter sqlparameter3 = new SqlParameter("@permission", permission);

            string sort = "z_userid desc";

            return SQLHelper.GetDataView(CommandType.Text, procedure, sort, sqlparameter1, sqlparameter2, sqlparameter3);            

        }

数据库中建立存储过程:

    create PROCEDURE zmt_procedure

      @z_username nvarchar(20),

      @z_sex nvarchar(20),

      @z_permission int

    AS

    BEGIN

     DECLARE @sql nvarchar(2000)

     set @sql='select u.z_userid,u.z_username,u.z_telephone,u.z_email,s.sex_name,p.permission_name from zmt_user u,zmt_permission p,zmt_sex s where s.sex_id=u.z_sex and p.permission_id = u.z_permission '

     if @z_username !='null'

          set @sql = @sql+' and u.z_username like ''%'+@z_username+ '%'''

     if @z_sex!='2'  

       set @sql = @sql+' and u.z_sex =''' + @z_sex +''''  

     if @z_permission!='2'

          set @sql = @sql+' and u.z_permission ='+cast(@z_permission as nvarchar)

     print (@sql)

   execute(@sql) --执行sql字符串

  END

 

posted @ 2015-06-11 15:51  Yida_婷婷  阅读(271)  评论(0编辑  收藏  举报