SQL语句查询数据库所有表和所有字段的详细信息（包括表描述和字段描述）

select (case
            when a.colorder = 1 then
                ddd.value
            else
                ''
        end
       )                                                as "表名（中文）" --如果表名相同就返回空
     , (case
            when a.colorder = 1 then
                d.name
            else
                ''
        end
       )                                                as 表名       --如果表名相同就返回空
     , (case
            when a.colorder = 1 then
                ddd.value
            else
                ''
        end
       )                                                as 表说明      --如果表名相同就返回空
     , 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 是否自增标识
     , (case
            when
            (
                select count(*)
                from sys.sysobjects --查询主键
                where (name in
                       (
                           select name
                           from sys.sysindexes
                           where (id = a.id)
                                 and (indid in
                                      (
                                          select indid
                                          from sys.sysindexkeys
                                          where (id = a.id)
                                                and (colid in
                                                     (
                                                         select colid from sys.syscolumns where (id = a.id) and (name = a.name)
                                                     )
                                                    )
                                      )
                                     )
                       )
                      )
                      and (xtype = 'PK')
            ) > 0 then
                '√'
            else
                ''
        end
       )                                                as 主键       --查询主键END
     , 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 sys.syscolumns                   a
    left join sys.systypes            b
        on a.xtype = b.xusertype
    inner join sys.sysobjects         d
        on a.id = d.id
           and d.xtype = 'U'
           and d.name <> 'dtproperties'
    left outer join
    (
        select major_id
             , value
        from sys.extended_properties
        where name = 'MS_Description'
              and minor_id = 0
    )                                 as ddd
        on a.id = ddd.major_id
    left join sys.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
order by a.id
       , a.colorder;

ALTER PROC [dbo].[sp_helpremark]      

@TABLE_NAME VARCHAR(50)      

AS      

SELECT
 (case when a.colorder=1 then ddd.value else '' end) as "表名（中文）",--如果表名相同就返回空
 (case when a.colorder=1 then d.name else '' end) as 表名,--如果表名相同就返回空
 (case when a.colorder=1 then ddd.value else '' end) as 表说明,--如果表名相同就返回空
     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 是否自增标识,
     (case when (SELECT count(*) FROM sysobjects--查询主键
                     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,--查询主键END
 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 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( SELECT major_id, value
     FROM sys.extended_properties
     WHERE name='MS_Description' AND minor_id = 0)
    as ddd  ON a.id = ddd.major_id
 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  where d.name like '%'+@TABLE_NAME+'%'
 order by a.id,a.colorder