sqlserver 脚本生成数据库文档

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,
      (case when b.name='nvarchar' then b.name+'('+convert(nvarchar(100),columnproperty(a.id,a.name,'PRECISION'))+')' else b.name end) 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 '是'else '否' 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 sys.extended_properties g
on a.id=g.major_id AND a.colid = g.Minor_id 
--where a.name!='Id' and a.name!='CreatedAt'and a.name!='LastModifiedAt'
--order by d.name,a.id,a.colorder

出处：https://www.cnblogs.com/yxlblogs/p/10027980.html

==========================================================

以下可以正常显示：

SELECT
      (case when a.colorder=1 then d.name else '' end)表名,
      d.name 表名1,
      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,
      (case when b.name='nvarchar' then b.name+'('+convert(nvarchar(100),columnproperty(a.id,a.name,'PRECISION'))+')' else b.name end) 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 '是'else '否' 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' 
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 1=1
--and d.name='t_test' --指定单个表名
order by d.name,a.id,a.colorder

下面想做一个简单的查询（未完，待续）

Declare @tableName varchar(50)
Set  @tableName = '表名'

select syscolumns.name as 字段名, syscolumns.length as 长度, 
systypes.name   as   '数据类型', 
sys.extended_properties.[value] AS '字段说明',
syscolumns.isnullable as '是否允许空值'  
from   syscolumns join systypes   on     syscolumns.xtype=systypes.xtype   
and   systypes.name <> 'sysname' 
LEFT OUTER JOIN sys.extended_properties ON ( sys.extended_properties.minor_id = syscolumns.colid AND sys.extended_properties.major_id = syscolumns.id) 
where   syscolumns.id   in (select   id   from   sysobjects   where   name= @tableName)