SQL查询所有表

SELECT   
TableName               =   CASE   WHEN   A.COLORDER=1   THEN   D.NAME   ELSE   D.NAME   END, 
FieldID       =   A.COLORDER, 
FieldName           =   A.NAME, 
Mark               =   CASE   WHEN   COLUMNPROPERTY(   A.ID,A.NAME, 'ISIDENTITY ')=1   THEN   '√ 'ELSE   ' '   END, 
Prik               =   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, 
Type               =   B.NAME
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 
ORDER   BY   
A.ID,A.COLORDER 

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 x join sys.indexes y on x.Type=N'PK' and x.Name=y.Name 
join sysindexkeys z on z.ID=a.Object_id and z.indid=y.index_id and z.indid in (0,1) and z.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]=case when ColumnProperty(a.object_id,a.Name,'Precision')=-1 then '2^31-1'
else rtrim(ColumnProperty(a.object_id,a.Name,'Precision')) end,
[小数]=isnull(ColumnProperty(a.object_id,a.Name,'Scale'),0),
[是否为空]=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
sys.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