怎么导出SQL所有用户表的字段信息

SELECT (CASE WHEN a.colorder = 1 THEN d.name ELSE '' END) AS 表名,
      a.colorder AS 字段序号, a.name AS 字段名, (CASE WHEN COLUMNPROPERTY(a.id,
      a.name, 'IsIdentity') = 1 THEN '√' ELSE '' END) AS 标识, (CASE WHEN
          (SELECT COUNT(*)
         FROM sysobjects
         WHERE (name IN
                   (SELECT name
                  FROM sysindexes
                  WHERE (id = a.id) AND (indid IN
                            (SELECT indid
                           FROM sysindexkeys
                           WHERE (id = a.id) AND (colid IN
                                     (SELECT colid
                                    FROM syscolumns
                                    WHERE (id = a.id) AND (name = a.name))))))) AND
               (xtype = 'PK')) > 0 THEN '√' ELSE '' END) AS 主键, b.name AS 类型,
      a.length AS 占用字节数, COLUMNPROPERTY(a.id, a.name, 'PRECISION') AS 长度,
      ISNULL(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0) AS 小数位数,
      (CASE WHEN a.isnullable = 1 THEN '√' ELSE '' END) AS 允许空, ISNULL(e.text, '')
      AS 默认值, ISNULL(g.[value], '') AS 字段说明
FROM syscolumns a LEFT OUTER 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 OUTER JOIN
      syscomments e ON a.cdefault = e.id LEFT OUTER JOIN
      sysproperties g ON a.id = g.id AND a.colid = g.smallid
ORDER BY a.id, a.colorder