列出SQL SERVER 所有表，字段名，主键，类型，长度，小数位数等信息

SELECT

       (case when a.colorder=1 then d.name else @#@# end)表名,

       a.colorder 字段序号,

       a.name 字段名,

       (case when COLUMNPROPERTY( a.id,a.name,@#IsIdentity@#)=1 then @#√@#else @#@# end) 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) 主键,

       b.name 类型,

       a.length 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) 允许空,

       isnull(e.text,@#@#) 默认值,

       isnull(g.[value],@#@#) AS 字段说明   


 


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 sysproperties g

on a.id=g.id AND a.colid = g.smallid 

order by a.id,a.colorder

原文转自：http://www.ltesting.net