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    获取MSSQL 表结构中字段的备注、主键等信息的sql
    1、MSSQL2000
    复制代码 代码如下:

    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--数据库
    go
    --2005实现字段属性统计(2000里的系统表sysproperties描述表、字段不存在,2005里用sys.extended_properties视图替代)
    select
    [表名]=c.Name,
    [表说明]=isnull(f.[value],''),
    [列名]=a.Name,
    [列序号]=a.Column_id,
    [标识]=case when is_identity=1 then '√' else '' end,
    [主键]=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,
    [类型]=b.Name,
    [字节数]=case when a.[max_length]=-1 and b.Name!='xml' then 'max/2G'
    when b.Name='xml' then ' 2^31-1字节/2G'
    else rtrim(a.[max_length]) end,
    [长度]=ColumnProperty(a.object_id,a.Name,'Precision'),
    [小数]=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],''),
    [默认值]=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
    [/code]
    结果:
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