SQL 查询表结构

SELECT  CASE WHEN col.colorder = 1 THEN obj.name  
                    ELSE ''  
               END AS 表名,  
          col.colorder AS 序号 ,  
          col.name AS 列名 ,  
          ISNULL(ep.[value], '') AS 列说明 ,  
          t.name AS 数据类型 ,  
          col.length AS 长度 ,  
          ISNULL(COLUMNPROPERTY(col.id, col.name, 'Scale'), 0) AS 小数位数 ,  
          CASE WHEN COLUMNPROPERTY(col.id, col.name, 'IsIdentity') = 1 THEN '√'  
               ELSE ''  
          END AS 标识 ,  
          CASE WHEN EXISTS ( SELECT   1  
                             FROM     dbo.sysindexes si  
                                      INNER JOIN dbo.sysindexkeys sik ON si.id = sik.id  
                                                                AND si.indid = sik.indid  
                                      INNER JOIN dbo.syscolumns sc ON sc.id = sik.id  
                                                                AND sc.colid = sik.colid  
                                      INNER JOIN dbo.sysobjects so ON so.name = si.name  
                                                                AND so.xtype = 'PK'  
                             WHERE    sc.id = col.id  
                                      AND sc.colid = col.colid ) THEN '√'  
               ELSE ''  
          END AS 主键 ,  
          CASE WHEN col.isnullable = 1 THEN '√'  
               ELSE ''  
          END AS 允许空 ,  
          ISNULL(comm.text, '') AS 默认值  
  FROM    dbo.syscolumns col  
          LEFT  JOIN dbo.systypes t ON col.xtype = t.xusertype  
          inner JOIN dbo.sysobjects obj ON col.id = obj.id  
                                           AND obj.xtype = 'U'  
                                           AND obj.status >= 0  
          LEFT  JOIN dbo.syscomments comm ON col.cdefault = comm.id  
          LEFT  JOIN sys.extended_properties ep ON col.id = ep.major_id  
                                                        AND col.colid = ep.minor_id  
                                                        AND ep.name = 'MS_Description'  
          LEFT  JOIN sys.extended_properties epTwo ON obj.id = epTwo.major_id  
                                                           AND epTwo.minor_id = 0  
                                                           AND epTwo.name = 'MS_Description'  
  WHERE   obj.name = 'TABLE_NAME'--表名  
  ORDER BY col.colorder ;