sql server中展示数据库所有表结构的查询语句，然后可以做Excel导出

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,
    字段说明   = isnull(G.[value],''),
    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,'')
 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
     sys.extended_properties  G on A.id=G.major_id and A.colid=G.minor_id
 Left Join
     sys.extended_properties F On D.id=F.major_id and F.minor_id=0
 --where D.name='t_WareHouse_InBoundList'    -- 如果只查询指定表，取消此行注释并替换表名
 Order By
     A.id,A.colorder