SELECT 表名 = d.name , 字段名= a.name, 主键 = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in ( SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end, 类型 = b.xtype,
长度 = COLUMNPROPERTY(a.id,a.name,'PRECISION'), --有问题的地方
小数位数 = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0), --有问题的地方
允许空 = case when a.isnullable=1 then '√'else '' end FROM AccountPayableDB..syscolumns a left join AccountPayableDB..systypes b on a.xusertype=b.xusertype inner join AccountPayableDB..sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties' left join AccountPayableDB..syscomments e on a.cdefault=e.id left join AccountPayableDB..sysproperties g on a.id=g.id and a.colid=g.smallid left join AccountPayableDB..sysproperties f on d.id=f.id and f.smallid = 0 order by a.id,a.colorder
我在查询分析器中试过，结果是没问题的，但是在c#中用sqlDataAdapter填充到DataTable后，
dataTable中“长度”一列结果都为System.DBNull, 小数位数都是0。
怎样才能解决这个问题
