获取MSSQL表结构中字段的备注、主键等信息

获取mssql表结构中字段的备注、主键等信息

1、mssql2000
select

    表名       = case when a.colorder=1 then d.name else '' end,
    表说明     = case when a.colorder=1 then isnull(f.value,'') else '' end,
    字段序号   = a.colorder,
    字段名     = a.name,
    标识       = case when columnproperty( a.id,a.name,'isidentity')=1 then '√'else '' end,
    主键       = case when exists(select 1 from sysobjects where xtype='pk' and parent_obj=a.id and name in (
                     select name from sysindexes where indid in(
                        select indid from sysindexkeys where id = a.id and colid=a.colid))) then '√' else '' end,
    类型       = b.name,
    占用字节数 = a.length,
    长度       = columnproperty(a.id,a.name,'precision'),
    小数位数   = isnull(columnproperty(a.id,a.name,'scale'),0),
    允许空     = case when a.isnullable=1 then '√'else '' end,
    默认值     = isnull(e.text,''),
    字段说明   = isnull(g.[value],'')
from 
    syscolumns a
left join 
    systypes b 
on 
    a.xusertype=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  
left join 
    sysproperties f 
on 
    d.id=f.id and f.smallid=0
where 
    d.name='fi_dept'    --如果只查询指定表,加上此条件
order by 
    a.id,a.colorder



2、mssql2005

use test--數據庫
go
--2005實現字段屬性統計(2000里的系統表sysproperties描述表、字段不存在，2005里用sys.extended_properties視圖替代)
select 
    [表名]=c.name,
    [表说明]=isnull(f.[value],''),
    [列名]=a.name,
    [列序號]=a.column_id,
    [標識]=case when is_identity=1 then '√' else '' end,
    [主鍵]=case when exists(select 1 from sys.objects where parent_object_id=a.object_id and type=n'pk' and name in
                    (select name from sys.indexes where index_id in
                    (select indid from sysindexkeys where and colid=a.column_id)))
                    then '√' else '' end,
    [類型]=b.name,
    [字節數]=case when a.[max_length]=-1 and b.name!='xml' then 'max/2g' 
            when b.name='xml' then ' 2^31-1字節/2g'
            else rtrim(a.[max_length]) end,
    [長度]=columnproperty(a.object_id,a.name,'precision'),
    [小數]=isnull(columnproperty(a.object_id,a.name,'scale'),0),
    [是否為空]=case when a.is_nullable=1 then '√' else '' end,
    [列说明]=isnull(e.[value],''),
    [默認值]=isnull(d.text,'')    
from 
    sys.columns a
left join
    sys.types b on a.user_type_id=b.user_type_id
inner join
    sys.objects c on a.object_id=c.object_id and c.type='u'
left join
    syscomments d on a.default_object_id=d.id
left join
    sys.extended_properties e on e.major_id=c.object_id and e.minor_id=a.column_id and e.class=1 
left join
    sys.extended_properties f on f.major_id=c.object_id and f.minor_id=0 and f.class=1

结果：