SELECT  d.name AS 表名 ,

        f.value AS 表说明,

        字段序号 = a.colorder ,

        字段名 = a.name ,

        标识 = CASE WHEN COLUMNPROPERTY(a.id, a.name, 'IsIdentity') = 1 THEN '√'

                  ELSE ''

             END ,

        主键 = CASE WHEN EXISTS ( SELECT  1

                                FROM    sysobjects

                                WHERE   xtype = 'PK'

                                        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.name ,

        占用字节数 = a.length ,

        长度 = COLUMNPROPERTY(a.id, a.name, 'PRECISION') ,

        小数位数 = ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) ,

        允许空 = CASE WHEN a.isnullable = 1 THEN '√'

                   ELSE ''

              END ,

        默认值 = ISNULL(e.text, '') ,

        字段说明 = ISNULL(g.[value], '')

FROM    syscolumns a

        LEFT   JOIN systypes b ON a.xtype = b.xusertype

        INNER   JOIN sysobjects d ON a.id = d.id

                                     AND d.xtype = 'U'

                                     AND d.name <> 'dtproperties'

        LEFT   JOIN syscomments e ON a.cdefault = e.id

        LEFT   JOIN sys.extended_properties g ON a.id = g.major_id

                                                 AND a.colid = g.minor_id

        LEFT   JOIN sys.extended_properties f ON d.id = f.major_id

                                                 AND f.minor_id = 0

WHERE   d.name = 'XXX'         --如果只查询指定表,加上此条件

ORDER BY a.id ,

        a.colorder